The document discusses key concepts in clinical laboratory management including leadership, quality management, safety, and regulations. Effective management requires both leaders to provide direction and managers to implement processes. Laboratories must balance various hazards through work practices, engineering controls, and personal protective equipment. Quality is ensured through approaches like total quality management, continuous quality improvement, and six sigma. Human resource management and strategic planning are also important aspects of running a successful clinical laboratory.
This document provides an overview of quality assurance and quality control processes in a clinical laboratory setting. It discusses key definitions of quality and quality management. It distinguishes between quality assurance and quality control, describing quality control as measurement to check analytical data quality while quality assurance guarantees integrity of overall data. The document outlines quality control selection criteria and evaluation methods. It also covers documentation requirements for a quality management system including classification of internal documents, external documents, and records.
This document discusses human parasite vaccines. It begins by explaining what vaccines do in stimulating the host's protective immune response. Developing effective parasite vaccines faces challenges including not fully understanding the parasite's life cycle and which stages elicit a protective immune response. Effective vaccines must produce long-lasting protection without boosting and be low-cost, stable, and safe. Progress has been limited for parasite vaccines due to parasites' ability to evade the immune system, uncertainty regarding which antigens stimulate protection, and differences between animal models and human immune responses. Major human parasitic diseases discussed include malaria, African sleeping sickness, Chagas disease, leishmaniasis, intestinal protozoa, schistosomiasis, onchocerciasis
Laboratory Services provides a comprehensive range of diagnostic testing and clinical and consultative services .
Medicare Part B (Medical Insurance) covers medically necessary clinical diagnostic laboratory services that are ordered by your doctor or practitioner.
Laboratory tests include certain blood tests, urinalysis, tests on tissue specimens, and some screening tests. They must be provided by a laboratory that meets Medicare requirements.
Any medical trial or clinical research is incomplete without a clinical laboratory. Traditionally speaking, a clinical laboratory examines and analyses components in blood, urine and body fluids... Blood grouping & Rh typing can also be performed.
Here are the suggested dimensions for the interior of a laboratory:
- Work benches: 3-4 feet wide by 10-12 feet long. Allow at least 3 feet of clear space between benches.
- Stools: Provide at least 1 stool per 2 linear feet of bench space. Stools should be adjustable in height from sitting to standing positions.
- Fume hoods: Provide at least 1 linear foot of fume hood space per 2 workers if volatile chemicals will be used. Minimum dimensions are 4 feet wide by 2 feet deep by 7 feet high.
- Storage: Allow at least 10 square feet per worker for chemical and equipment storage in ventilated cabinets and on shelves above benches. Flammable materials should
The presentation topic was an introduction to diagnostic bacteriology. It discussed the main function of diagnostic bacteriology laboratories is to detect and identify microorganisms from human, animal, food, industrial, or environmental samples. Additionally, it mentioned that in clinical laboratories, determining the drug susceptibility of isolates is important to allow for correct treatment decisions. The presentation also briefly outlined the main methods used in bacteriological identification and diagnosis, including microscopy, bacterial culture, sensitivity tests, serological tests, and molecular detection.
The document discusses key concepts in clinical laboratory management including leadership, quality management, safety, and regulations. Effective management requires both leaders to provide direction and managers to implement processes. Laboratories must balance various hazards through work practices, engineering controls, and personal protective equipment. Quality is ensured through approaches like total quality management, continuous quality improvement, and six sigma. Human resource management and strategic planning are also important aspects of running a successful clinical laboratory.
This document provides an overview of quality assurance and quality control processes in a clinical laboratory setting. It discusses key definitions of quality and quality management. It distinguishes between quality assurance and quality control, describing quality control as measurement to check analytical data quality while quality assurance guarantees integrity of overall data. The document outlines quality control selection criteria and evaluation methods. It also covers documentation requirements for a quality management system including classification of internal documents, external documents, and records.
This document discusses human parasite vaccines. It begins by explaining what vaccines do in stimulating the host's protective immune response. Developing effective parasite vaccines faces challenges including not fully understanding the parasite's life cycle and which stages elicit a protective immune response. Effective vaccines must produce long-lasting protection without boosting and be low-cost, stable, and safe. Progress has been limited for parasite vaccines due to parasites' ability to evade the immune system, uncertainty regarding which antigens stimulate protection, and differences between animal models and human immune responses. Major human parasitic diseases discussed include malaria, African sleeping sickness, Chagas disease, leishmaniasis, intestinal protozoa, schistosomiasis, onchocerciasis
Laboratory Services provides a comprehensive range of diagnostic testing and clinical and consultative services .
Medicare Part B (Medical Insurance) covers medically necessary clinical diagnostic laboratory services that are ordered by your doctor or practitioner.
Laboratory tests include certain blood tests, urinalysis, tests on tissue specimens, and some screening tests. They must be provided by a laboratory that meets Medicare requirements.
Any medical trial or clinical research is incomplete without a clinical laboratory. Traditionally speaking, a clinical laboratory examines and analyses components in blood, urine and body fluids... Blood grouping & Rh typing can also be performed.
Here are the suggested dimensions for the interior of a laboratory:
- Work benches: 3-4 feet wide by 10-12 feet long. Allow at least 3 feet of clear space between benches.
- Stools: Provide at least 1 stool per 2 linear feet of bench space. Stools should be adjustable in height from sitting to standing positions.
- Fume hoods: Provide at least 1 linear foot of fume hood space per 2 workers if volatile chemicals will be used. Minimum dimensions are 4 feet wide by 2 feet deep by 7 feet high.
- Storage: Allow at least 10 square feet per worker for chemical and equipment storage in ventilated cabinets and on shelves above benches. Flammable materials should
The presentation topic was an introduction to diagnostic bacteriology. It discussed the main function of diagnostic bacteriology laboratories is to detect and identify microorganisms from human, animal, food, industrial, or environmental samples. Additionally, it mentioned that in clinical laboratories, determining the drug susceptibility of isolates is important to allow for correct treatment decisions. The presentation also briefly outlined the main methods used in bacteriological identification and diagnosis, including microscopy, bacterial culture, sensitivity tests, serological tests, and molecular detection.
CD4 counts give you and your doctor a good idea of how much damage HIV has done to your immune system. But you also need to know how fast that damage is happening. Viral load tests, which tell the doctor how much HIV is in your blood, are a very important clue to how quickly HIV is doing harm.
Blood culturing is the most important test for detecting pathogens in the bloodstream. It involves collecting blood in specialized bottles that contain growth media for aerobic and anaerobic organisms. It is critical that the collection procedure is done aseptically. Newer automated systems can continuously monitor blood cultures and detect microbial growth within 24-48 hours, providing faster results than conventional methods. Rapid identification of pathogens in positive blood cultures is important for guiding appropriate treatment.
This document discusses the requirements and process for laboratory accreditation according to ISO 15189 standards. It explains that accreditation is a formal recognition by an authoritative body that a laboratory is competent to perform specific tasks. The key requirements outlined include developing a quality management system, appointing a quality manager and technical manager, establishing quality indicators for monitoring and continual improvement, comprehensive documentation, and regular audits.
This document discusses quality control and quality assurance in microbiological laboratory investigations. It emphasizes the importance of standard operating procedures, internal quality assessment, and external quality assessment. Quality control occurs at multiple stages of analysis, including pre-analytical (specimen collection and transport), analytical (reagents, equipment, procedures), and post-analytical (reporting and interpretation of results). A quality control officer oversees quality control in the department through regular monitoring, assessment, communication, and analysis of quality control data.
This document provides guidance for implementing the Stepwise Laboratory Improvement Process Towards Accreditation (SLIPTA) in the African region. It describes the background and need for the initiative due to weaknesses in public health laboratory systems. The purpose is to guide countries in strengthening laboratory quality management systems using the SLIPTA approach. Key elements covered include the origins of SLIPTA, governance structure, the audit process, criteria for enrollment, evaluation approach using a checklist, process for recognition of improvements, and operational procedures. The definitions section clarifies important terms related to standards, certification, accreditation and related oversight bodies.
Macroscopic and microscopic examination of clinical specimens is important for orienting the diagnosis of infectious diseases. Macroscopic examination assesses specimen quality and identifies abnormalities that may indicate a pathogen, such as turbid CSF suggesting bacterial meningitis. Microscopic examination uses various staining techniques and microscopy types to visualize pathogens like bacteria, parasites, and fungi directly in specimens. Stains such as Gram and Ziehl-Neelsen are used to classify bacteria and identify acid-fast organisms like Mycobacterium tuberculosis respectively. Together, macroscopic and microscopic examination provide clues for targeting appropriate microbiological tests and presumptive diagnosis.
In the continuous quality journey, Controlling laboratory Errors is an integral part & focusing on analytical, post-analytical process is the first step. Developing a reporting culture followed by thorough analysis and implementation of appropriate corrective, preventive actions is required.
The document discusses rational antibiotic use and antibiotic resistance. It defines rational antibiotic use as patients receiving appropriate medications for their clinical needs in adequate doses and durations at the lowest cost. Antibiotic overuse and misuse can lead to resistance, which is a major public health problem. Hospitals should establish antibiotic policies and antimicrobial stewardship programs to optimize antibiotic use and slow resistance by ensuring appropriate prescribing and monitoring of antibiotic use and resistance patterns.
In the era of modern technology, health care delivery system involves so many different personnel and specialties that the caregiver must have an understanding and working knowledge of other professional endeavors, including the role of diagnostic evaluation.
Basically, laboratory and diagnostic tests are tools by and of themselves, they are not therapeutic.
In conjunction with a pertinent history and physical examination, these tests can confirm a diagnosis or provide valuable information about a patient status and response to therapy.
In addition to these, laboratory findings are essential for epidemiological surveillance and research purposes.
If the entire network of a laboratory service is to be effectively utilized and contribute to health care and disease prevention, every member of its work force need to:
Understand the role of the laboratory and its contribution to the nation’s health service;
Appreciate the need to involve all members in the provision of health service;
Follow professional ethics and code of conduct;
Experience job satisfaction and have professional loyalty.
Medical laboratory science is a complex field embracing a number of different disciplines such as
Microbiology,
Hematology,
Clinical Chemistry,
Urinalysis,
Immunology,
Serology,
Histopathology,
Immunohematology and
Molecular biology and others
A lecture for first-year students at Baquba Technical Institute belongs to Middle Technical University. This lecture is a part of the first semester's modules (Medical Laboratory Technology: MLT112).
This lecture included an introduction to medical (or diagnostic) laboratories.
National Accreditation Board for Testing and Calibration Laboratories (NABL) provides accreditation to Conformity Assessment Bodies (Laboratories) in India. NABL Schemes include Accreditation (Recognition) of Technical competence of testing, calibration, medical testing laboratories, Proficiency testing providers (PTP) & Reference Material Producers (RMP) for a specific scope following ISO/IEC 17025, ISO 15189, ISO/IEC 17043[2] & ISO 17034:2016 Standards. It has Mutual Recognition Arrangement (MRA) with Asia Pacific Laboratory Accreditation Cooperation (APLAC), International Laboratory Accreditation Cooperation (ILAC).
NABL is a constituent board of Quality Council of India which is an autonomous body setup under Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry, Government of India.
The document discusses the emergence of antimicrobial resistance due to the introduction and use of antimicrobials in humans and animals. It states that while antimicrobial resistance genes have existed naturally for thousands of years, the widespread use of antimicrobials has applied strong selective pressure that has led to growing antimicrobial resistance among human and animal pathogens. It also describes some of the associations seen between antimicrobial use and the emergence of resistance in various settings and bacterial species.
The document discusses HIV testing procedures for adults and children. It outlines the objectives of HIV testing, general principles, types of diagnostic tests, and strategies for testing. It also covers tests for diagnosing HIV in children under 18 months, including DNA PCR. Guidelines for monitoring disease progression and ART response via CD4 count and viral load testing are presented. The key aims of HIV testing are diagnosis, monitoring, and surveillance to help control the HIV epidemic.
The use of antimicrobial in humans and animals, the consequences of this use, the political and economic barriers to improve prudent use and possible solutions for this problem.
Supportive services in hospitals such as medical gases, HVAC, housekeeping, CSSD, food and beverages play important backup roles to clinical staff. They maintain germ-free environments, supply necessary materials and equipment, and provide nutritious food, all of which support patient recovery and satisfaction. Proper planning and efficient management of these services are essential for hospitals to run smoothly and provide high quality care.
The document discusses the importance of developing an antibiotic policy to improve antibiotic use and combat antibiotic resistance. It notes that overuse and misuse of antibiotics in various healthcare, agricultural, and community settings has contributed significantly to the rise of antibiotic-resistant bacteria. An antibiotic policy aims to standardize and promote best practices for antibiotic prophylaxis and treatment. It also seeks to improve education, optimize resource use, and slow the emergence and spread of resistant bacteria. Developing effective antibiotic stewardship requires coordinated efforts between clinicians, microbiologists, pharmacists, and other stakeholders. Ongoing monitoring of resistance patterns and prudent prescribing guided by local susceptibility data are also emphasized.
This document discusses various molecular techniques used for diagnosis of infectious diseases. It notes that molecular methods are most important for pathogens that are difficult to detect by conventional methods, like Mycobacterium tuberculosis and Chlamydia trachomatis. Several amplification techniques are described, including PCR, NASBA, TBA, SDA, and LAMP. These allow detection of pathogens in clinical samples and identification of antibiotic resistance. The document also discusses probe-based methods like hybrid capture, signal amplification techniques like branched DNA, and other methods like plasmid profiling, nucleotide sequencing, and RFLP for microbial classification and epidemiological analysis.
The document discusses clinical laboratory tests and their importance in diagnosis, describing common tests performed, potential sources of error, and factors that can cause variation in test results. Routine tests are outlined for hematology, urinalysis, and feces. Laboratory errors can occur from pre-analytical issues like improper specimen handling or post-analytical issues like transcription mistakes. Test results are also influenced by biological and pathological factors in individuals like diet, exercise, and use of medications.
Lab Tests are tools that provide information about the client.
Tests may be used for basic screening as part of a wellness check.
Frequently tests are used to help confirm a diagnosis, monitor an illness, and provide valuable information about the client’s response to treatment.
CD4 counts give you and your doctor a good idea of how much damage HIV has done to your immune system. But you also need to know how fast that damage is happening. Viral load tests, which tell the doctor how much HIV is in your blood, are a very important clue to how quickly HIV is doing harm.
Blood culturing is the most important test for detecting pathogens in the bloodstream. It involves collecting blood in specialized bottles that contain growth media for aerobic and anaerobic organisms. It is critical that the collection procedure is done aseptically. Newer automated systems can continuously monitor blood cultures and detect microbial growth within 24-48 hours, providing faster results than conventional methods. Rapid identification of pathogens in positive blood cultures is important for guiding appropriate treatment.
This document discusses the requirements and process for laboratory accreditation according to ISO 15189 standards. It explains that accreditation is a formal recognition by an authoritative body that a laboratory is competent to perform specific tasks. The key requirements outlined include developing a quality management system, appointing a quality manager and technical manager, establishing quality indicators for monitoring and continual improvement, comprehensive documentation, and regular audits.
This document discusses quality control and quality assurance in microbiological laboratory investigations. It emphasizes the importance of standard operating procedures, internal quality assessment, and external quality assessment. Quality control occurs at multiple stages of analysis, including pre-analytical (specimen collection and transport), analytical (reagents, equipment, procedures), and post-analytical (reporting and interpretation of results). A quality control officer oversees quality control in the department through regular monitoring, assessment, communication, and analysis of quality control data.
This document provides guidance for implementing the Stepwise Laboratory Improvement Process Towards Accreditation (SLIPTA) in the African region. It describes the background and need for the initiative due to weaknesses in public health laboratory systems. The purpose is to guide countries in strengthening laboratory quality management systems using the SLIPTA approach. Key elements covered include the origins of SLIPTA, governance structure, the audit process, criteria for enrollment, evaluation approach using a checklist, process for recognition of improvements, and operational procedures. The definitions section clarifies important terms related to standards, certification, accreditation and related oversight bodies.
Macroscopic and microscopic examination of clinical specimens is important for orienting the diagnosis of infectious diseases. Macroscopic examination assesses specimen quality and identifies abnormalities that may indicate a pathogen, such as turbid CSF suggesting bacterial meningitis. Microscopic examination uses various staining techniques and microscopy types to visualize pathogens like bacteria, parasites, and fungi directly in specimens. Stains such as Gram and Ziehl-Neelsen are used to classify bacteria and identify acid-fast organisms like Mycobacterium tuberculosis respectively. Together, macroscopic and microscopic examination provide clues for targeting appropriate microbiological tests and presumptive diagnosis.
In the continuous quality journey, Controlling laboratory Errors is an integral part & focusing on analytical, post-analytical process is the first step. Developing a reporting culture followed by thorough analysis and implementation of appropriate corrective, preventive actions is required.
The document discusses rational antibiotic use and antibiotic resistance. It defines rational antibiotic use as patients receiving appropriate medications for their clinical needs in adequate doses and durations at the lowest cost. Antibiotic overuse and misuse can lead to resistance, which is a major public health problem. Hospitals should establish antibiotic policies and antimicrobial stewardship programs to optimize antibiotic use and slow resistance by ensuring appropriate prescribing and monitoring of antibiotic use and resistance patterns.
In the era of modern technology, health care delivery system involves so many different personnel and specialties that the caregiver must have an understanding and working knowledge of other professional endeavors, including the role of diagnostic evaluation.
Basically, laboratory and diagnostic tests are tools by and of themselves, they are not therapeutic.
In conjunction with a pertinent history and physical examination, these tests can confirm a diagnosis or provide valuable information about a patient status and response to therapy.
In addition to these, laboratory findings are essential for epidemiological surveillance and research purposes.
If the entire network of a laboratory service is to be effectively utilized and contribute to health care and disease prevention, every member of its work force need to:
Understand the role of the laboratory and its contribution to the nation’s health service;
Appreciate the need to involve all members in the provision of health service;
Follow professional ethics and code of conduct;
Experience job satisfaction and have professional loyalty.
Medical laboratory science is a complex field embracing a number of different disciplines such as
Microbiology,
Hematology,
Clinical Chemistry,
Urinalysis,
Immunology,
Serology,
Histopathology,
Immunohematology and
Molecular biology and others
A lecture for first-year students at Baquba Technical Institute belongs to Middle Technical University. This lecture is a part of the first semester's modules (Medical Laboratory Technology: MLT112).
This lecture included an introduction to medical (or diagnostic) laboratories.
National Accreditation Board for Testing and Calibration Laboratories (NABL) provides accreditation to Conformity Assessment Bodies (Laboratories) in India. NABL Schemes include Accreditation (Recognition) of Technical competence of testing, calibration, medical testing laboratories, Proficiency testing providers (PTP) & Reference Material Producers (RMP) for a specific scope following ISO/IEC 17025, ISO 15189, ISO/IEC 17043[2] & ISO 17034:2016 Standards. It has Mutual Recognition Arrangement (MRA) with Asia Pacific Laboratory Accreditation Cooperation (APLAC), International Laboratory Accreditation Cooperation (ILAC).
NABL is a constituent board of Quality Council of India which is an autonomous body setup under Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry, Government of India.
The document discusses the emergence of antimicrobial resistance due to the introduction and use of antimicrobials in humans and animals. It states that while antimicrobial resistance genes have existed naturally for thousands of years, the widespread use of antimicrobials has applied strong selective pressure that has led to growing antimicrobial resistance among human and animal pathogens. It also describes some of the associations seen between antimicrobial use and the emergence of resistance in various settings and bacterial species.
The document discusses HIV testing procedures for adults and children. It outlines the objectives of HIV testing, general principles, types of diagnostic tests, and strategies for testing. It also covers tests for diagnosing HIV in children under 18 months, including DNA PCR. Guidelines for monitoring disease progression and ART response via CD4 count and viral load testing are presented. The key aims of HIV testing are diagnosis, monitoring, and surveillance to help control the HIV epidemic.
The use of antimicrobial in humans and animals, the consequences of this use, the political and economic barriers to improve prudent use and possible solutions for this problem.
Supportive services in hospitals such as medical gases, HVAC, housekeeping, CSSD, food and beverages play important backup roles to clinical staff. They maintain germ-free environments, supply necessary materials and equipment, and provide nutritious food, all of which support patient recovery and satisfaction. Proper planning and efficient management of these services are essential for hospitals to run smoothly and provide high quality care.
The document discusses the importance of developing an antibiotic policy to improve antibiotic use and combat antibiotic resistance. It notes that overuse and misuse of antibiotics in various healthcare, agricultural, and community settings has contributed significantly to the rise of antibiotic-resistant bacteria. An antibiotic policy aims to standardize and promote best practices for antibiotic prophylaxis and treatment. It also seeks to improve education, optimize resource use, and slow the emergence and spread of resistant bacteria. Developing effective antibiotic stewardship requires coordinated efforts between clinicians, microbiologists, pharmacists, and other stakeholders. Ongoing monitoring of resistance patterns and prudent prescribing guided by local susceptibility data are also emphasized.
This document discusses various molecular techniques used for diagnosis of infectious diseases. It notes that molecular methods are most important for pathogens that are difficult to detect by conventional methods, like Mycobacterium tuberculosis and Chlamydia trachomatis. Several amplification techniques are described, including PCR, NASBA, TBA, SDA, and LAMP. These allow detection of pathogens in clinical samples and identification of antibiotic resistance. The document also discusses probe-based methods like hybrid capture, signal amplification techniques like branched DNA, and other methods like plasmid profiling, nucleotide sequencing, and RFLP for microbial classification and epidemiological analysis.
The document discusses clinical laboratory tests and their importance in diagnosis, describing common tests performed, potential sources of error, and factors that can cause variation in test results. Routine tests are outlined for hematology, urinalysis, and feces. Laboratory errors can occur from pre-analytical issues like improper specimen handling or post-analytical issues like transcription mistakes. Test results are also influenced by biological and pathological factors in individuals like diet, exercise, and use of medications.
Lab Tests are tools that provide information about the client.
Tests may be used for basic screening as part of a wellness check.
Frequently tests are used to help confirm a diagnosis, monitor an illness, and provide valuable information about the client’s response to treatment.
GENERAL INTRODUCTION TO CHEMICAL PATHOLOGY-SPECIMENS COLLECTION BY DR ABUDU...Xavier875943
This document provides an overview of chemical pathology and clinical chemistry laboratory testing. It discusses common terminology used in chemical pathology, such as reference values and units of measurement. It describes the collection, handling, and preservation of specimens in chemical pathology laboratories. The document outlines the purpose and types of clinical chemistry tests, including tests that measure substances involved in biological functions, waste products, substances indicating cell damage or disease, and drugs or toxins. It discusses the types of specimens used in chemical analysis, including whole blood, serum, plasma, urine, and other fluids. The document provides details on patient preparation, phlebotomy procedures, and factors that can affect test results such as fasting, lipemia, and hemolysis.
Current Component Therapy by Diane Eklund, MDbloodbankhawaii
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Clinical laboratory test results are very important for diagnosis, monitoring, and screening. 70-80% of diagnostic decisions are based on laboratory results. Thus, it is imperative that clinicians understand laboratory tests and how to properly interpret results. Laboratory results must be interpreted using reference intervals that distinguish health from disease states. Clinicians must consider biological variation and the potential for false positive or negative results. The laboratory also has a responsibility to provide clinicians with information to assist in correct interpretation.
This document discusses the interpretation of clinical biochemistry laboratory results. It begins by explaining that understanding laboratory numbers is crucial for correct diagnosis and treatment. Results are usually reported as concentrations or activities. Concentrations contain units of quantity and volume, such as milligrams per deciliter. Standard International (S.I.) units are now commonly used, with substances reported in moles per liter where possible. Activities measure the rate of enzymatic processes and are affected by testing conditions. The document emphasizes that correctly interpreting results is essential for clinical decision making.
This document discusses the laboratory investigation of transfusion reactions. It begins by defining transfusion and transfusion reactions. It then outlines the initial measures taken before investigation, including maintaining IV saline and notifying physicians. The main laboratory investigations include clerical checks to identify errors, visual checks of plasma for hemolysis, and serology checks including ABO testing and direct antiglobulin testing on pre-and post-transfusion samples. If these preliminary tests have positive results, additional tests like grouping, antibody screening and crossmatching are repeated from before transfusion.
Chemical pathology involves measuring analytes in body fluids to aid in diagnosis, screening, monitoring, and prognosis of diseases. It provides over 70% of objective medical record data through tests of electrolytes, liver/kidney function markers, hormones, drugs, and tumor markers. Test results are interpreted using reference ranges which provide context for medical decisions by defining normal and abnormal values. Chemical pathology tests body fluids like blood, urine, CSF, pleural fluid, and synovial fluid to measure analytes like ions, proteins, enzymes, and organic molecules.
Interpretation of clinical laboratory values.pptxNathanGospel
Laboratory tests are performed to discover, diagnose, stage or classify diseases, and monitor therapy effectiveness. Tests are classified as screening or diagnostic. Pharmacists monitor laboratory tests to assess drug effects, determine proper dosing, and assess need for alternative therapy. Common tests include complete blood count, liver and kidney function tests, and cardiac enzyme levels. Abnormal results can indicate various diseases and conditions. Proper interpretation requires considering patient factors and potential sources of error.
This document discusses the uses and types of clinical biochemistry investigations as well as quality control procedures. It notes that lab tests are used to confirm diagnoses, start treatment, screen for risk, monitor disease progression and response to therapy. Tests can be emergency, routine, special, or panels focusing on specific organs or metabolic processes. Quality control ensures accuracy, precision and error-free reporting through procedures like internal controls, reference ranges, and external quality assessments. Factors like specimen collection, transport, drugs, and physiology can influence test results.
Chemical pathology involves the biochemical analysis of bodily fluids to aid in disease diagnosis and management. Dr. S.A. Sakyi's presentation outlines the scope and objectives of chemical pathology, which includes describing disease mechanisms, selecting appropriate tests, and specimen collection and handling. Key aspects covered include common tests performed in chemical pathology laboratories, the roles of chemical pathology in healthcare, and factors that can influence laboratory test results such as diet, medications, and specimen processing.
This document provides guidance on evaluating and managing anemia in patients. It discusses evaluating the cause of anemia based on history, physical exam, and lab tests. Causes in critically ill patients especially include blood loss from phlebotomy and bleeding, decreased erythropoiesis from inflammation, and nutritional deficiencies. Transfusions are used to manage anemia but have risks, so restrictive protocols targeting Hgb <7g/dL are recommended except for patients with cardiovascular conditions. New blood substitutes are still experimental and have shown adverse effects.
The urinalysis is one of the most commonly ordered tests in pediatrics due to the ease of urine collection and testing. The urine dipstick test screens for various disorders and remains a common test performed in primary care clinics. Abnormal dipstick results can be due to pathological or non-pathological causes, and false positives and negatives are also common. It is important to consider the clinical context and perform repeat testing or microscopic analysis when abnormal dipstick results are found.
Blood Transfusion: Rethinking who, what and whenSCGH ED CME
This document summarizes the key points from a presentation on rethinking blood transfusion practice. It discusses how transfusion guidelines have evolved over time, noting some uncertainty around transfusion thresholds. It also outlines both the risks of anaemia but also potential risks and harms of blood transfusion, such as immune modulation effects and increased infection rates. The presentation promotes the importance of patient blood management programs to optimize hemoglobin levels, minimize blood loss, and reduce unnecessary transfusions in order to improve patient outcomes. Specific strategies discussed include single unit transfusion policies, increased use of intravenous iron, and reducing sample collection errors through improved education and policies.
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The best massage spa Ajman is Chandrima Spa Ajman, which was founded in 2023 and is exclusively for men 24 hours a day. As of right now, our parent firm has been providing massage services to over 50,000+ clients in Ajman for the past 10 years. It has about 8+ branches. This demonstrates that Chandrima Spa Ajman is among the most reasonably priced spas in Ajman and the ideal place to unwind and rejuvenate. We provide a wide range of Spa massage treatments, including Indian, Pakistani, Kerala, Malayali, and body-to-body massages. Numerous massage techniques are available, including deep tissue, Swedish, Thai, Russian, and hot stone massages. Our massage therapists produce genuinely unique treatments that generate a revitalized sense of inner serenely by fusing modern techniques, the cleanest natural substances, and traditional holistic therapists.
PET CT beginners Guide covers some of the underrepresented topics in PET CTMiadAlsulami
This lecture briefly covers some of the underrepresented topics in Molecular imaging with cases , such as:
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Michigan HealthTech Market Map 2024. Includes 7 categories: Policy Makers, Academic Innovation Centers, Digital Health Providers, Healthcare Providers, Payers / Insurance, Device Companies, Life Science Companies, Innovation Accelerators. Developed by the Michigan-Israel Business Accelerator
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardso...rightmanforbloodline
TEST BANK For Accounting Information Systems, 3rd Edition by Vernon Richardson, Verified Chapters 1 - 18, Complete Newest Version
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TEST BANK FOR Health Assessment in Nursing 7th Edition by Weber Chapters 1 - ...rightmanforbloodline
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Chandrima Spa Ajman is one of the leading Massage Center in Ajman, which is open 24 hours exclusively for men. Being one of the most affordable Spa in Ajman, we offer Body to Body massage, Kerala Massage, Malayali Massage, Indian Massage, Pakistani Massage Russian massage, Thai massage, Swedish massage, Hot Stone Massage, Deep Tissue Massage, and many more. Indulge in the ultimate massage experience and book your appointment today. We are confident that you will leave our Massage spa feeling refreshed, rejuvenated, and ready to take on the world.
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This particular slides consist of- what is hypotension,what are it's causes and it's effect on body, risk factors, symptoms,complications, diagnosis and role of physiotherapy in it.
This slide is very helpful for physiotherapy students and also for other medical and healthcare students.
Here is the summary of hypotension:
Hypotension, or low blood pressure, is when the pressure of blood circulating in the body is lower than normal or expected. It's only a problem if it negatively impacts the body and causes symptoms. Normal blood pressure is usually between 90/60 mmHg and 120/80 mmHg, but pressures below 90/60 are generally considered hypotensive.
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Joker Wigs has been a one-stop-shop for hair products for over 26 years. We provide high-quality hair wigs, hair extensions, hair toppers, hair patch, and more for both men and women.
LGBTQ+ Adults: Unique Opportunities and Inclusive Approaches to CareVITASAuthor
This webinar helps clinicians understand the unique healthcare needs of the LGBTQ+ community, primarily in relation to end-of-life care. Topics include social and cultural background and challenges, healthcare disparities, advanced care planning, and strategies for reaching the community and improving quality of care.
Healthy Eating Habits:
Understanding Nutrition Labels: Teaches how to read and interpret food labels, focusing on serving sizes, calorie intake, and nutrients to limit or include.
Tips for Healthy Eating: Offers practical advice such as incorporating a variety of foods, practicing moderation, staying hydrated, and eating mindfully.
Benefits of Regular Exercise:
Physical Benefits: Discusses how exercise aids in weight management, muscle and bone health, cardiovascular health, and flexibility.
Mental Benefits: Explains the psychological advantages, including stress reduction, improved mood, and better sleep.
Tips for Staying Active:
Encourages consistency, variety in exercises, setting realistic goals, and finding enjoyable activities to maintain motivation.
Maintaining a Balanced Lifestyle:
Integrating Nutrition and Exercise: Suggests meal planning and incorporating physical activity into daily routines.
Monitoring Progress: Recommends tracking food intake and exercise, regular health check-ups, and provides tips for achieving balance, such as getting sufficient sleep, managing stress, and staying socially active.
The facial nerve, also known as cranial nerve VII, is one of the 12 cranial nerves originating from the brain. It's a mixed nerve, meaning it contains both sensory and motor fibres, and it plays a crucial role in controlling various facial muscles, as well as conveying sensory information from the taste buds on the anterior two-thirds of the tongue.
About this webinar: This talk will introduce what cancer rehabilitation is, where it fits into the cancer trajectory, and who can benefit from it. In addition, the current landscape of cancer rehabilitation in Canada will be discussed and the need for advocacy to increase access to this essential component of cancer care.
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Christina Spears, breast cancer genetic counselor at the Ohio State University Comprehensive Cancer Center, joined us for the MBC Support Group for Black Women to discuss the importance of genetic testing in communities of color and answer pressing questions.
Hypertension and it's role of physiotherapy in it.Vishal kr Thakur
This particular slides consist of- what is hypertension,what are it's causes and it's effect on body, risk factors, symptoms,complications, diagnosis and role of physiotherapy in it.
This slide is very helpful for physiotherapy students and also for other medical and healthcare students.
Here is summary of hypertension -
Hypertension, also known as high blood pressure, is a serious medical condition that occurs when blood pressure in the body's arteries is consistently too high. Blood pressure is the force of blood pushing against the walls of blood vessels as the heart pumps it. Hypertension can increase the risk of heart disease, brain disease, kidney disease, and premature death.
2. Mission and Management
of Laboratory Services
Mission of Laboratory Services:
To provide high quality of services, in the right place and at
the right time in respect of the needs of:
- Patients
- Clinicians
- Epidemiologists
- Environmental Sanitarians
Management of Laboratory Services:
Is the guiding of human and physical resources (money,
equipment, reagents, materials and space) through the
laboratory towards determined goals and objectives,
achieving beneficial results for those served.
3. Phases of The Laboratory
Analytical Process
Phases Of The Laboratory Analytical Process
25 %
Analytical phase
Laboratory Technicians
18%
Post-Analytical phase
Reporting
Registration
Sending
20%
Pre-Analytical phase
outside laboratory
Nurses
Doctors
Patients
37%
Pre-Analytical phase
inside laboratory
Patients
Laboratory Technicians
4. Sources of Variations in
Laboratory Results
A- Pre-Analytical Sources:
Preparation of the patient
Obtaining the specimen
Processing the specimen
Specimen interference
Storing the specimen
5. Sources of Variations in
Laboratory Results
B- Analytical Sources:
Dispensing a sample aliquot into a reaction vessel.
Combining the sample with one or more reagents.
Recording some physical or chemical consequences of
the reaction.
Calculating the value of the parameter measured.
C- Post-Analytical Sources:
Accepting the result of the test by the Laboratory
Technician as being of good quality.
Sending the report of the test to the requesting
physician.
6. Pre-Analytical Control
The pre-analytical control includes control on the
following variations:
a. Biological sources of variation.
b. Variation due to specimen collection, transport and
storage.
They are frequent sources of misinterpretation of
laboratory results, even when the laboratory
investigation has been satisfactorily performed.
They may give rise to unnecessary discussions
between the laboratory and health care personnel and
may also lead to further unnecessary investigations.
7. Pre-Analytical Control
It is therefore very important that collection of
specimens be done under standardized conditions,
which include:
a. The preparation of a patient prior to sampling
b. Recording of personal data, e.g. age, sex and clinical
diagnosis and treatment.
8. 1. Biological sources of
variation
The range of the reference values, as well as the results
obtained from measurements in a patient’s specimen are
affected by a number of pre-analytical influences, as
follows:
• Genetic
• Sex
• Age
• Nutrition
• Posture of the patient during specimen sampling.
• Physical activity.
• Non-periodic changes.
9. 1.1 Genetic Variation
A number of genetically determined diseases are
endemic in certain populations. In these populations
the prevalence of the disease may be high,
Some examples are:
- Sickle cell anaemia in African populations.
- Thalassaemia in Mediterranean and Asian
populations.
Other genetic disorders are more or less equally
distributed in different populations.
10. 1.1 Genetic Variation
Examples are:
• Familial hypercholesterolaemia.
• Phenylketonuria.
• Cystinuria.
• Hypothyroidism.
More than 300 variants of the haemoglobin molecule
have been identified, only a few of which cause
clinical symptoms
11. 1.2 Sex-related variation
The differences of the reference ranges for some of the
analytes as observed in an adult population are given
below:
Test Male Female
ESR mm/h 1-13 1-20
Heamoglobin (g/dl) 13-18 12-16
Haematocrit (%) 40-54 39-51
Uric acid (mol/L) 210-420 150-350
ALT (U/L) 10-50 10-35
AST (U/L) 10-50 10-35
For the following analytes the sex-dependent differences in
concentration are negligible: urea, glucose, alkaline
phosphatase.
12. 1.3 Age-dependent
variation
Age-dependent changes occur in a number of
haematological and chemical tests.
Most impressive are the differences of results from
blood of a neonate when compared with the normal
ranges for adults, such as in the case of bilirubin,
glucose, total protein, and erythrocyte
sedimentation rate.
Some analytes reach values which could be
misinterpreted as highly pathological if the age of the
patient is not taken into account.
13. 1.4 Nutrition-dependant
variant
The nutritional status of the patient may sometimes
strongly affect the concentration of a number of
analytes in blood. It may even be necessary to keep
him/her on a special diet prior to the investigation of
blood, so as to obtain more accurate information
about metabolic status.
Ingestion of large volumes of water may result in
falsely normal urine glucose concentration; on the
other hand dehydration may cause elevated urine
glucose concentration.
In some subjects ethanol ingestion acutely changes
activities of ALT and AST.
14. 1.4 Nutrition-dependant
variant
Smoking does not usually influence results of common
tests; however, Hb is increased in chronic smokers.
Changes in some analytes due to nutritional state:
Analyte Change
Serum triglycerides Elevated after fat-rich meal
Serum urea Elevated after meat ingestion
Serum glucose Elevated after carbohydrate
ingestion
Aspartate aminotransferase
(AST)
Elevated after alcohol ingestion
Urine ketone bodies Increased during fasting
Urine pH Elevated after ingestion of
vegetables.
15. 1.5 Variation due to posture of the
patient during blood sampling
The changes are more pronounced when blood is
taken from a healthy person changing position from
horizontal to upright, than changes resulting from
technical factors during investigation in a laboratory
with good practice.
A change from the upright to the horizontal position
may result in a change in concentration or activity of
certain tests up to 15%.
Changes in analytes of patients who changed from a
horizontal to an upright position:
16. 1.5 Variation due to posture of
the patient during blood sampling
Analyte Change
Urea -3%
Creatinine +5%
Protein +10%
AST +15%
ALT +15%
Alkaline Phosphatase +12%
Cholesterol +8%
Haematocrit +10%
Albumin +10%
17. 1.6 Variation due physical
exercise
Physical exercise may cause pronounced changes in the
activity of enzymes occurring in muscle.
Creatine phosphokinase activity (CK) as well as
aspartate transaminase(AST) increase markedly after
physical exercise.
Increases of Hb concentration and PCV and of the RBC,
WBC and platelets in dehydrated patients are due to
the decrease in plasma volume.
There is an increase in the number of circulating
neutrophils during and following physical exercise.
18. 1.7 Variation due to non-
periodic changes
The occurrence of a non-periodic change, such s
pregnancy, may alter the reference value for a number
of common analytes., such as transaminase activities,
serum lipids and hormones.
There is usually and increase in the number of
neutrophils during pregnancy – sometimes, there is
even a neutrophilic leukocytosis.
The ESR also increases during pregnancy.
On the other hand, the Hb concentration, PCV and RBC
decrease, due at least partially to an increase in plasma
volume.
The effect of interactions and/or interferences,
especially by drugs, on laboratory results has to be
remembered.
19. 2. Variation due to specimen
collection, transport and storage
The most frequent source affecting laboratory analysis in a
well-functioning laboratory is not the laboratory
investigation itself but specimen preparation and errors in
identification or labeling.
Changes in the composition of a specimen can be caused
during:
• Collection.
• Transportation.
• Centrifugation.
• Storage.
20. 2.1 Blood specimens
2.1.1 Collection of blood specimens:
The simplest technique for blood collection is
capillary puncture.
Venous blood samples are preferable for
determination of platelet counts because platelets
adhere to the puncture wound.
Preventing haematoma during vein-puncture:
- Use preferably veins in the elbow area, and only
major veins.
- Be careful that the bevel of the needle is fully
inside the vein.
- Be careful not to transverse the vein.
21. 2.1 Blood specimens
Preventing haematoma during vein-puncture:
- Loosen the tourniquet and ensure haemostasis with a
dry sterile cotton ball before pulling out the needle.
Blood samples should preferably not be taken from
intravenous lines but, if this is unavoidable, care must be
taken to ensure that the intravenous fluid does not dilute
the sample.
If the blood has been collected in a syringe, the needle is
removed before the tube is filled.
The syringe is placed below the rim of the tube and the
blood is expelled gently down the side.
If the sample is to be anticoagulated, the blood is mixed
gently with anticoagulant by repeated inversion.
22. 2.1.2 Preservation of Blood
specimens
The preferred anticoagulant for most haematological
investigations (e.g. of Hb concentration, PCV, WBC, RBC,
reticulocyte counts or platelet count) is a dry EDTA.
The final concentration of anticoagulant should be 1.5 ( + 0.3)
mg/ml blood.
If the final concentration is more than 2mg/ml blood, this may
cause erroneously low PVC, it may also cause cellular artifacts
due to shrinkage of blood cells in films made from the blood
samples.
For erythrocyte sedimentation rate (ESR) the ratio of blood to
citrate is 4:1 (v/v).
Although heparin can be used for routine haematological
investigations, it is not recommended because cells deteriorate
more rapidly in heparinized than in EDTA-anticoagulated blood.
23. 2.1.3 Preparation of thin
blood film
Making the spreaders: select a slide with perfectly
smooth edges and make a diagonal scratch across the
two corners at one end and snap off the two corners
with a pain of pliers.
Disinfect the tip of the third or fourth finger with
ethanol. With the lancet prick the lateral side of the
ball, not too close to the nail bed.
Bring the end of the slide into contact with a small
drop of blood, being careful not to let the slide come
into contact with the skin.
Place the slide on a flat surface and steady it with the
index finger and the thumb.
24. 2.1.3 Preparation of thin
blood film
Place the end of the spreader at an angle of 45” to the first
slide slanting towards the drop of blood. Draw the
spreader back until it touches the drop of blood and wait
until the blood has spread along the entire edge of the
spreader.
With a firm fast motion push the spreader along the first
slide maintaining the 45” angle. In this way the blood is
drawn after the spreader in a thin smear which if the
original drop is small enough, ends in a drawn-out tail well
before reaching the end of the first slide.
Wave the slide so it dries quickly, In humid seasons the
drying of the film can be speeded up by waving the slide 5
cm away from the flame of spirit lamp.
With a lead pencil mark the thick part of the film with the
patient’s name or number.
25. 2.1.4 Common faults in
preparing thin blood films
Common faults in preparing thin blood films
Fault Cause
The end of the film is lost The drop of the blood is too big
The film ends in a thick line The spreader has been lifted
up too early
The end of the film is ragged The edge of the spreader is
uneven
Lines along the film Blood is clotting when the film
is made
Lines across the film The spreader was pushed
forward jerkily
Holes in the film Greasy slide
26. 2.1.5 Transport and storage of
blood
As a principal rule in laboratory investigation, whole
blood should not be stored.
Blood, urine, other body fluids and excreta are excellent
media for the growth of contaminating bacteria
If blood, plasma or serum cannot be directly transported
to the laboratory or immediately investigated, they
should be kept in the dark at 4 to 8 oC in a stoppered
vial to prevent evaporation of water and degradation of
analytes by light.
Analytes affected by prolonged storage of blood
specimen:
Creatinine, Glucose, Alkaline phosphatase, AST, Hb, PCV,
WBC, Reticulocytes, Platelets, ESR.
27. 2.1.5 Transport and storage of
blood
Stability of analytes in serum stored in a stoppered tube:
Analyte 4 oC 20-25 oC
Bilirubin measurement in fresh serum
Creatinine 24 d not recommended
Protein 6 d
Triglyceride 2 d not recommended
Urea 3 d 24 h
Uric acid 5 d 5 d
Alkaline phosphatase 7 d 7 d 10% decrease
AST 3 d 8% 3 d 10% decrease
ALT 3 d 10% 3 d 17% decrease
28. 2.1.6 Haemolysis
It is important to avoid haemolysis at every step during blood
sampling, transportation and storage.
Artificial causes of haemolysis:
Blood sampling through a too small needle.
Forced suction of blood in the syringe during blood
collection.
Vigorous shaking of blood in the syringe or test tube.
Forced expulsion of blood from the syringe, especially
through a needle.
Centrifuging blood samples at high speed before
completion of clotting.
Freezing and thawing of blood.
Unclean tubes with residual detergent.
29. 2.1.6 Haemolysis
Artificial causes of haemolysis:
Water (or hypotonic solutions) in syringe or tube.
Chemical tests affected by haemolysis:
Bilirubin
Cholesterol
Alkaline phosphatase.
30. 2.1.7 Sources of analytical
variation after blood collection:
Contamination (microbial or chemical)
Prolonged transportation and storage prior to measurement due to:
- glucose uptake by blood cells
- liberation of enzymes from blood cells
- liberation of ions from blood cells
- rapid decay of enzyme activity
Temperature
Incorrect specimen identification.
Exposure to light: bilirubin.
Transport in open or poorly stoppered vials or leaving specimens
uncapped on the bench. This leads to evaporation of water from
plasma, or conversely water uptake in a humid atmosphere.
31. 2.2 Urine specimen
A random urine specimen collected in a clean, but not-
sterile container is used for qualitative or semi-quantitative
examination of contents such as glucose, protein, pH,
specific gravity, bile pigments, and possible presence of
blood, pus, or crystals.
Often the first morning-voided specimen is requested
because it gives the urine concentration most accurately.
Quantitative urine analysis is helpful for assessment of
kidney function.
For chemical and microbiological examination the urine
must be collected “clean”, because any discharge or pus
from the vagina or external genitals added to the urine will
invalidate the examination.
32. 2.2 Urine specimen
For the demonstration of eggs of schistosomes a random
urine sample should preferably be collected between 10
am and 2 pm, as the concentrations of eggs are greater
during this period. Particularly in the last drop of the
passed urine. Exercise prior to the collection will result in
an excretion of more eggs.
33. 2.2.1 Urine collection
Give the patient a clean, preferably sterile container of
appropriate size (50 ml or more; for quantitative chemical
investigations the whole volume excreted during 24 hours must
be carefully collected in a 2-litre container).
The container must be free of detergents, which may cause false
determinations.
The container should be pre-lablelled with identification data, at
least the patient’s first name and surname.
Instruct the patient before the collection, preferably with
illustrations. Tell him or her not to touch the inside or rim of the
container. Ensure that his/her hands are clean.
Specific instructions should be given to each category of patients:
- Male patients - Female patients
- Patients not requiring assistance
- Bedridden patients requiring assistance - Infants
34. 2.2.2 Urine transportation
Urine specimens should be transported to the laboratory
within one hour for chemical and microbiological
investigations, the reason being the growth of bacteria.
A specimen containing 103 bacteria/ml after collection may
have 105 bacteria/ml 2 hours later when kept at ambient
temperature.
If transport cannot be immediately assured, the specimen
should be refrigerated and processed within 24 hours.
Additives are not required.
35. 2.3 Sexually transmitted
disease specimens:
Sexually transmitted diseases (STD) are caused by a large variety of
viruses, bacteria, fungi and parasites.
With a few exceptions all these microorganisms are too delicate and
fastidious to grow in vitro. Culture of these organisms will also detect
a number of asymptomatic carriers, and is therefore not
recommended.
Their identification depends therefore upon the collection of an
appropriate specimen and upon its transportation under optimal
conditions to the laboratory.
All specimens should be collected before the administration of
antibiotics or the application of topical drugs.
Vaginal fluid should be collected by a doctor using a speculum and a
cotton swab.
The exudate is immediately mixed with a drop of saline on a slide,
covered with a cover slip, and examined under the dry x40 objective
for motile trichomonas, budding yeasts, or clue cells. Yeasts can be
easily visualized by adding a drop of 10% potassium hydroxide (KOH)
to the exudate.
36. 2.4 Stool specimens:
2.4.1 Collection of stool specimen:
Faecal material should be collected directly in the
container.
The specimen should not be contaminated with urine.
Stool specimens must not be left exposed to the air in
containers without lids.
Rectal swabs should only be taken if the patient is unable
to produce a stool specimen.
The technician should inspect every stool specimen and
record the observations on the request form. Note the
consistency (watery, liquid, mushy or formed) and the
presence of blood, pus, mucus or adult parasitic worms.
37. 2.4 Stool specimens:
2.4.2 Collection of stool specimen:
Specimens for bacteriological examination should be
transported to the laboratory and processed within a few
hours. In case of delay the specimen should be refrigerated. If
longer delays cannot be avoided a special transport medium
should be used.
Stool for parasitological examination can be preserved for
several weeks by mixing the specimen with at least 3 volumes
of preservative fluid.
A 10% formalin (3.4% formaldehyde) solution is
recommended.
For the detection of motile forms of Entamoeba histolytica
and other protozoa, suspected stools should be examined
within one hour after defecation, without preliminary
refrigeration.
38. 2.4 Stool specimens:
2.4.2 Collection of stool specimen:
A wet mount in saline of freshly passed faecs is prepared and
examined at once under the microscope.
Microscopic examination of stools for amoebae requires
technical expertise. False results are common, especially
when examination is done by a non-expert.
39. 2.5 Criteria for rejection of
specimens:
Missing or inadequate identification.
Insufficient volume.
Specimen collected in wrong collection tube.
Contamination.
Inappropriate transport and storage.
Unknown time delay.