This document provides information about microscopic examination of urine sediments. It describes how to prepare and examine urine samples under a microscope. Key points include:
- Centrifuging a urine sample to concentrate the sediment, then examining a drop under the microscope using both low and high power fields.
- Common elements found in urine sediments include red and white blood cells, epithelial cells, casts, crystals, bacteria, yeast, parasites, mucus, fat and other elements.
- Additional staining techniques can aid in identification, such as using Sternheimer-Malbin to identify white blood cells and epithelial cells.
- Findings should be reported semi-quantitatively as rare, few, moderate or many.
-
This document discusses quality assurance in hematology laboratories. It defines key terms like accuracy, precision, and components of quality assurance like pre-analytical, analytical, and post-analytical stages. It describes the importance of proper specimen collection and handling in the pre-analytical stage. The analytical stage involves internal and external quality control. Specific controls for hematology analyzers like Latron beads and 6C & retics controls are discussed. The importance of result verification, critical value notification, and collaboration in the post-analytical stage is highlighted. Calibration, proficiency testing, and the role of risk assessment in ensuring patient safety are also summarized.
The document describes several chemical tests that can be performed on urine and feces samples to test for various substances:
1) The heat and acetic acid test can detect protein in urine and differentiate between types of protein.
2) Benedict's test detects the presence of reducing sugars in urine through a color change reaction.
3) The foam test uses color changes to detect bilirubin in urine.
4) The benzidine test detects blood in urine through a color change reaction.
5) The Fantus test detects chlorides in urine through a precipitation reaction.
This document discusses several major blood group systems including Lewis, I, P, MNSs, Kell, Kidd, Duffy, Lutheran, Bg, Sda, and Xg. It provides information on the antigens and genes involved in each system, the clinical significance of associated antibodies, and inheritance patterns. Some key points covered include that Lewis, I, and P antigens produce cold-reacting antibodies while Kell, Kidd, and Duffy produce warm-reacting antibodies. The MNSs, Kell, and Kidd systems can produce clinically significant antibodies implicated in hemolytic transfusion reactions and hemolytic disease of the newborn.
The clinical lab provides diagnostic test data to aid in the detection, diagnosis and treatment of disease. The lab is responsible for correct identification, collection and processing of patient specimens, accurate performance of testing, timely reporting of results, and communication with healthcare professionals. There are six main steps in how a sample flows through the lab: 1) test is ordered, 2) sample is collected, 3) sample is delivered to the lab, 4) sample is processed, 5) sample is analyzed, and 6) results are reported. Common specimen types include blood, urine, body fluids, sputum, stool, and tissue samples.
This document provides information on quality control and quality assurance in medical laboratories. It defines key terms like quality control, quality assurance, and quality assessment. It describes variables that can affect result quality and sources of errors. Random errors are unpredictable variations while systematic errors create biases. The document outlines Westgard rules, which are used to evaluate analytical runs and detect random and systematic errors. Steps for resolving quality control problems and minimum criteria for determining when results are out of control are also discussed.
This document provides information and instructions for collecting urine samples and performing a urinalysis. It discusses obtaining first morning voids, clean-catch samples, and timed urine collections. The types of urinalysis covered are macroscopic examination, chemical analysis using urine dipsticks, microscopic examination, and culture. Specific tests on the dipstick like glucose, bilirubin, ketones, specific gravity, blood, pH, protein, urobilinogen, nitrite, and leukocyte esterase are explained.
The document discusses compatibility testing protocols for blood transfusions. It describes how compatibility testing includes ABO and Rh grouping of donor and recipient samples, screening for unexpected antibodies, and a cross-match. Proper identification of donor and recipient samples is critical to avoid errors. The purpose is to select appropriately compatible blood and ensure the best results for the transfusion by preventing hemolysis or antibody-mediated destruction of transfused red blood cells.
Urine -Physical and Chemical Examination and Reagent StripsDr. Pritika Nehra
Urinalysis is an important lab test that can detect many diseases by examining abnormalities in the urine. A basic urinalysis includes gross examination of urine properties and a dipstick analysis to detect substances like blood, white blood cells, sugar, and others. A microscopic analysis may also be needed to detect cellular elements, casts, and crystals. Diseases that can be detected include renal diseases, urinary tract infections, metabolic disorders like diabetes, liver diseases, plasma cell disorders, genetic abnormalities, and pregnancy. A proper urine sample and handling is required for an accurate analysis. The urinalysis provides information on physical properties, chemical constituents, and microscopic examination of urine sediments.
This document discusses quality assurance in hematology laboratories. It defines key terms like accuracy, precision, and components of quality assurance like pre-analytical, analytical, and post-analytical stages. It describes the importance of proper specimen collection and handling in the pre-analytical stage. The analytical stage involves internal and external quality control. Specific controls for hematology analyzers like Latron beads and 6C & retics controls are discussed. The importance of result verification, critical value notification, and collaboration in the post-analytical stage is highlighted. Calibration, proficiency testing, and the role of risk assessment in ensuring patient safety are also summarized.
The document describes several chemical tests that can be performed on urine and feces samples to test for various substances:
1) The heat and acetic acid test can detect protein in urine and differentiate between types of protein.
2) Benedict's test detects the presence of reducing sugars in urine through a color change reaction.
3) The foam test uses color changes to detect bilirubin in urine.
4) The benzidine test detects blood in urine through a color change reaction.
5) The Fantus test detects chlorides in urine through a precipitation reaction.
This document discusses several major blood group systems including Lewis, I, P, MNSs, Kell, Kidd, Duffy, Lutheran, Bg, Sda, and Xg. It provides information on the antigens and genes involved in each system, the clinical significance of associated antibodies, and inheritance patterns. Some key points covered include that Lewis, I, and P antigens produce cold-reacting antibodies while Kell, Kidd, and Duffy produce warm-reacting antibodies. The MNSs, Kell, and Kidd systems can produce clinically significant antibodies implicated in hemolytic transfusion reactions and hemolytic disease of the newborn.
The clinical lab provides diagnostic test data to aid in the detection, diagnosis and treatment of disease. The lab is responsible for correct identification, collection and processing of patient specimens, accurate performance of testing, timely reporting of results, and communication with healthcare professionals. There are six main steps in how a sample flows through the lab: 1) test is ordered, 2) sample is collected, 3) sample is delivered to the lab, 4) sample is processed, 5) sample is analyzed, and 6) results are reported. Common specimen types include blood, urine, body fluids, sputum, stool, and tissue samples.
This document provides information on quality control and quality assurance in medical laboratories. It defines key terms like quality control, quality assurance, and quality assessment. It describes variables that can affect result quality and sources of errors. Random errors are unpredictable variations while systematic errors create biases. The document outlines Westgard rules, which are used to evaluate analytical runs and detect random and systematic errors. Steps for resolving quality control problems and minimum criteria for determining when results are out of control are also discussed.
This document provides information and instructions for collecting urine samples and performing a urinalysis. It discusses obtaining first morning voids, clean-catch samples, and timed urine collections. The types of urinalysis covered are macroscopic examination, chemical analysis using urine dipsticks, microscopic examination, and culture. Specific tests on the dipstick like glucose, bilirubin, ketones, specific gravity, blood, pH, protein, urobilinogen, nitrite, and leukocyte esterase are explained.
The document discusses compatibility testing protocols for blood transfusions. It describes how compatibility testing includes ABO and Rh grouping of donor and recipient samples, screening for unexpected antibodies, and a cross-match. Proper identification of donor and recipient samples is critical to avoid errors. The purpose is to select appropriately compatible blood and ensure the best results for the transfusion by preventing hemolysis or antibody-mediated destruction of transfused red blood cells.
Urine -Physical and Chemical Examination and Reagent StripsDr. Pritika Nehra
Urinalysis is an important lab test that can detect many diseases by examining abnormalities in the urine. A basic urinalysis includes gross examination of urine properties and a dipstick analysis to detect substances like blood, white blood cells, sugar, and others. A microscopic analysis may also be needed to detect cellular elements, casts, and crystals. Diseases that can be detected include renal diseases, urinary tract infections, metabolic disorders like diabetes, liver diseases, plasma cell disorders, genetic abnormalities, and pregnancy. A proper urine sample and handling is required for an accurate analysis. The urinalysis provides information on physical properties, chemical constituents, and microscopic examination of urine sediments.
The document provides information on analyzing urinary electrolytes to evaluate extracellular volume status. It defines fractional excretion of sodium (FENa) and notes it is not dependent on urine volume and easy to calculate. While FENa and fractional excretion of chloride (FECl) generally vary in parallel, UNa and UCl can differ by more than 15 meq/L in 30% of volume depletion cases. Measuring both UNa and UCl is recommended in these situations to better evaluate volume status. Interpretation requires considering the clinical context as urinary electrolyte values considered normal may indicate inappropriate renal wasting in certain conditions.
This document summarizes a presentation on automation in urinalysis. It discusses the objectives of automating urinalysis, which are to standardize sample processing, biochemical testing, and microscopy analysis while also increasing efficiency. Several types of automated urinalysis systems are presented, including those for biochemical testing using test strips, automated microscopy using flow cytometry or digital imaging, and fully integrated systems. The advantages of automation including increased throughput and standardization are highlighted, as well as the principles of various automated testing methods.
This document discusses crystalluria, or the presence of crystals in urine. It notes that crystalluria is a common finding but can sometimes indicate an underlying pathology. Crystals are classified as either common/normal or pathological. While common crystals usually have no clinical significance, persistent findings should be investigated. Certain crystals like cystine are always abnormal. Drug crystalluria can cause renal problems and requires adjusting the drug or patient's hydration/urine pH. Overall, crystalluria requires considering the crystal type and clinical context to determine if it is of normal or pathological significance.
Urinary sediments under microscopic examinationArnab Nandy
This document provides an overview of microscopic examination of urinary sediments. It discusses the objectives of examination including identifying red blood cells, white blood cells, renal epithelial cells, and various crystals and casts. It describes unorganized sediments such as uric acid crystals, calcium oxalate, and phosphates that can form in acidic or alkaline urine depending on factors like pH and diseases. Organized sediments discussed include tubular casts that can be non-cellular, cellular, pigmented, and composed of proteins, epithelial debris, and other materials. The document stresses the importance of urinary sediments in providing clues about the site, duration, and nature of renal afflictions.
This document discusses pre-transfusion testing procedures, including patient identification, blood sample collection and handling, compatibility testing, and crossmatching. The key steps are:
1) Performing ABO and Rh typing on the recipient's sample to determine blood type.
2) Screening for unexpected antibodies and identifying any present to guide compatible blood unit selection.
3) Crossmatching a recipient's plasma with donor red blood cells to confirm compatibility and detect antibodies.
4) Labeling and releasing crossmatched blood units for transfusion only after resolving any discrepancies.
Special stains are used in hematology and cytology to identify specific molecules that are not visible with routine staining. They can determine if certain molecules are present or absent, where they are located, and how much is present. Examples of special stains discussed in the document include fetal hemoglobin stain, Prussian blue for sideroblasts, methyl violet for Heinz bodies, Papanicolaou stain in cytology, and Masson Fontana silver stain to identify melanin and argentaffin granules. These stains help characterize and diagnose blood and cellular abnormalities.
The document provides guidance on proper urine sample collection and analysis. It emphasizes analyzing urine as soon as possible, within 30 minutes ideally. If longer storage is needed, the urine must be refrigerated and brought to room temperature before examination. Physical, biochemical, and microscopic tests are described to examine properties like color, specific gravity, glucose, ketones, blood, and sediment such as casts, crystals, and cells. Proper collection and handling is important to accurately detect abnormalities.
This document provides an overview of urine and body fluid crystal examination with a focus on morphological properties. It discusses the history of urine examination, routine urine analysis protocols and their limitations, normal and abnormal findings in urine sediment examination including red and white blood cells, casts, and crystals. It emphasizes the importance of urine crystal identification and differentiating various crystal types based on their morphological characteristics under both bright field and polarized light microscopy. The goal is to help pathologist consultants and prepare candidates for board examinations in clinical pathology.
This document discusses several special hematology stains including Periodic acid-Schiff (PAS), Perl's Prussian Blue reaction, leukocyte alkaline phosphatase (LAP), and myeloperoxidase. PAS stains carbohydrates such as glycogen and is used to identify abnormal erythroblasts and dysplastic megakaryocytes. Perl's Prussian Blue stains iron and demonstrates ring sideroblasts and Pappenheimer bodies. LAP stains neutrophil alkaline phosphatase and helps differentiate chronic myelogenous leukemia. Myeloperoxidase stains the enzyme in neutrophils, monocytes and eosinophils and is used to identify myeloid or monocytic leukemias.
This document provides details on microscopic examination of urine sediment. Key points include:
- Urine sample collection and preparation for examination under microscope by centrifuging and examining the sediment.
- Classification of findings as organised or unorganised substances, and types of cells, casts, crystals and other formed elements that may be observed.
- Significance of various normal and abnormal findings in identifying renal and other diseases. Detailed morphology of different cell types, casts, crystals and other structures are described.
Weak D testing is performed on all prenatal patients, Rh negative blood donors and transfusion candidates to identify those with the weak D phenotype. The procedure involves incubating patient red blood cells with anti-D, and if negative, adding anti-human globulin to look for weak agglutination indicating a weak D positive result. A true weak D will show at least 2+ agglutination; weaker results may be due to prior transfusions and require checking the transfusion history. All results are documented in the grouping register.
This document discusses quality assurance in blood banking. It outlines the quality control processes that should be followed at various stages of blood collection and processing, including donor selection, blood collection, component preparation, storage, and transportation. Key aspects of quality control covered are premises and facility requirements, equipment calibration and maintenance, reagent quality control, and infectious disease testing quality assurance. The document provides details on acceptable parameters and frequencies of quality control checks for various blood components.
Quality assurance in blood banking involves implementing quality control checks at various stages of the blood collection and processing process. This includes donor screening, blood collection following aseptic techniques, proper storage and labeling of blood components, sterility testing, equipment calibration, and testing blood components for key attributes like volume and factors. Regular internal and external quality audits help ensure standards are maintained.
Washed red blood cell suspensions are prepared to remove plasma proteins that could interfere with antigen-antibody reactions during blood typing tests. The red blood cells are separated from whole blood via centrifugation and washed with saline to remove plasma. This helps remove soluble antigens, interfering proteins, and substances that could cause false positive reactions. The washed red blood cells are then suspended in saline at a 3-5% concentration for use in blood typing tests.
The document discusses different methods of blood collection including capillary, venous, and arterial blood. It describes the equipment and procedures used to collect blood via these methods and the tests that each type is suited for. The document also outlines the various anticoagulants used in blood collection tubes, including EDTA, citrate, heparin, oxalate, and their mechanisms and uses. Finally, it addresses the order that tubes should be drawn in and storage of blood in blood banks.
The document provides information on urinalysis including guidelines for sample collection and storage. It discusses the various reasons urinalysis is performed such as to evaluate health, diagnose metabolic diseases, and monitor conditions like diabetes. Components normally present in urine like volume, pH, and inorganic/organic constituents are outlined. The document also describes the types of urinalysis including physical, chemical, microscopic, and cultural examinations. Microscopic examination involves identifying organized elements like epithelial cells, RBCs, WBCs, and casts as well as unorganized elements such as crystals and sediments.
This document discusses the Lupus erythematosus cell (LE cell), which is a neutrophil or monocyte that has ingested altered nuclear material from another cell. The presence of LE cells in blood smears is strongly suggestive of systemic lupus erythematosus (SLE). The document describes a method called the Rotary Method of Zinkham and Conley for inducing the formation of LE cells from a patient's blood sample through rotation and heating. It notes that a positive LE cell test is found in 75% of SLE patients but there can be false positives, so it is not a definitive diagnostic test.
This document provides information about urine analysis including collection and preservation of urine samples, physical examination of urine, and chemical examination of urine.
Key points include: urine should be collected in a clean, dry container; physical properties examined include volume, color, odor, appearance and specific gravity; chemical tests can detect proteins, sugars, pH, and other substances; abnormal results may indicate conditions like urinary tract infections, kidney diseases, or metabolic disorders. Precise methods are described to test for proteins, sugars, pH, and other urine components. Interpretation of results is provided to evaluate both normal and pathological findings.
This document discusses donor selection and blood collection procedures. It outlines strategies for donor recruitment including voluntary, social persuasion, and remunerated donations. The donor selection process involves counseling, screening donors using a questionnaire and health check, and determining temporary or permanent deferrals. Blood collection follows standard safety procedures using approved equipment and materials while monitoring the donor's health.
1. Microscopic examination of urine sediment involves centrifuging urine to concentrate any cells, casts, crystals, or other structures present.
2. Common findings include red and white blood cells, epithelial cells, hyaline casts, calcium oxalate crystals, and triple phosphate crystals.
3. The presence and amounts of these components provide diagnostic information, such as renal infection from white blood cell casts or glomerular disease from red blood cell casts.
Chapter 5. Microscopic examination of urine pptreshadnuredin1
This chapter discusses microscopic examination of urine sediment. Key points include:
1) Microscopic examination provides valuable diagnostic information by identifying normal and abnormal urine sediments such as red blood cells, white blood cells, epithelial cells, casts, crystals, and bacteria.
2) The procedure for microscopic examination involves mixing and centrifuging a urine sample, examining the resuspended sediment under low and high power objectives, and reporting the results both quantitatively and qualitatively.
3) Common organized sediments include red and white blood cells, epithelial cells from the kidney, bladder, and urethra, and hyaline casts which indicate renal proteinuria. Abnormal quantities or types of sediments provide clues to urinary tract diseases.
The document provides information on analyzing urinary electrolytes to evaluate extracellular volume status. It defines fractional excretion of sodium (FENa) and notes it is not dependent on urine volume and easy to calculate. While FENa and fractional excretion of chloride (FECl) generally vary in parallel, UNa and UCl can differ by more than 15 meq/L in 30% of volume depletion cases. Measuring both UNa and UCl is recommended in these situations to better evaluate volume status. Interpretation requires considering the clinical context as urinary electrolyte values considered normal may indicate inappropriate renal wasting in certain conditions.
This document summarizes a presentation on automation in urinalysis. It discusses the objectives of automating urinalysis, which are to standardize sample processing, biochemical testing, and microscopy analysis while also increasing efficiency. Several types of automated urinalysis systems are presented, including those for biochemical testing using test strips, automated microscopy using flow cytometry or digital imaging, and fully integrated systems. The advantages of automation including increased throughput and standardization are highlighted, as well as the principles of various automated testing methods.
This document discusses crystalluria, or the presence of crystals in urine. It notes that crystalluria is a common finding but can sometimes indicate an underlying pathology. Crystals are classified as either common/normal or pathological. While common crystals usually have no clinical significance, persistent findings should be investigated. Certain crystals like cystine are always abnormal. Drug crystalluria can cause renal problems and requires adjusting the drug or patient's hydration/urine pH. Overall, crystalluria requires considering the crystal type and clinical context to determine if it is of normal or pathological significance.
Urinary sediments under microscopic examinationArnab Nandy
This document provides an overview of microscopic examination of urinary sediments. It discusses the objectives of examination including identifying red blood cells, white blood cells, renal epithelial cells, and various crystals and casts. It describes unorganized sediments such as uric acid crystals, calcium oxalate, and phosphates that can form in acidic or alkaline urine depending on factors like pH and diseases. Organized sediments discussed include tubular casts that can be non-cellular, cellular, pigmented, and composed of proteins, epithelial debris, and other materials. The document stresses the importance of urinary sediments in providing clues about the site, duration, and nature of renal afflictions.
This document discusses pre-transfusion testing procedures, including patient identification, blood sample collection and handling, compatibility testing, and crossmatching. The key steps are:
1) Performing ABO and Rh typing on the recipient's sample to determine blood type.
2) Screening for unexpected antibodies and identifying any present to guide compatible blood unit selection.
3) Crossmatching a recipient's plasma with donor red blood cells to confirm compatibility and detect antibodies.
4) Labeling and releasing crossmatched blood units for transfusion only after resolving any discrepancies.
Special stains are used in hematology and cytology to identify specific molecules that are not visible with routine staining. They can determine if certain molecules are present or absent, where they are located, and how much is present. Examples of special stains discussed in the document include fetal hemoglobin stain, Prussian blue for sideroblasts, methyl violet for Heinz bodies, Papanicolaou stain in cytology, and Masson Fontana silver stain to identify melanin and argentaffin granules. These stains help characterize and diagnose blood and cellular abnormalities.
The document provides guidance on proper urine sample collection and analysis. It emphasizes analyzing urine as soon as possible, within 30 minutes ideally. If longer storage is needed, the urine must be refrigerated and brought to room temperature before examination. Physical, biochemical, and microscopic tests are described to examine properties like color, specific gravity, glucose, ketones, blood, and sediment such as casts, crystals, and cells. Proper collection and handling is important to accurately detect abnormalities.
This document provides an overview of urine and body fluid crystal examination with a focus on morphological properties. It discusses the history of urine examination, routine urine analysis protocols and their limitations, normal and abnormal findings in urine sediment examination including red and white blood cells, casts, and crystals. It emphasizes the importance of urine crystal identification and differentiating various crystal types based on their morphological characteristics under both bright field and polarized light microscopy. The goal is to help pathologist consultants and prepare candidates for board examinations in clinical pathology.
This document discusses several special hematology stains including Periodic acid-Schiff (PAS), Perl's Prussian Blue reaction, leukocyte alkaline phosphatase (LAP), and myeloperoxidase. PAS stains carbohydrates such as glycogen and is used to identify abnormal erythroblasts and dysplastic megakaryocytes. Perl's Prussian Blue stains iron and demonstrates ring sideroblasts and Pappenheimer bodies. LAP stains neutrophil alkaline phosphatase and helps differentiate chronic myelogenous leukemia. Myeloperoxidase stains the enzyme in neutrophils, monocytes and eosinophils and is used to identify myeloid or monocytic leukemias.
This document provides details on microscopic examination of urine sediment. Key points include:
- Urine sample collection and preparation for examination under microscope by centrifuging and examining the sediment.
- Classification of findings as organised or unorganised substances, and types of cells, casts, crystals and other formed elements that may be observed.
- Significance of various normal and abnormal findings in identifying renal and other diseases. Detailed morphology of different cell types, casts, crystals and other structures are described.
Weak D testing is performed on all prenatal patients, Rh negative blood donors and transfusion candidates to identify those with the weak D phenotype. The procedure involves incubating patient red blood cells with anti-D, and if negative, adding anti-human globulin to look for weak agglutination indicating a weak D positive result. A true weak D will show at least 2+ agglutination; weaker results may be due to prior transfusions and require checking the transfusion history. All results are documented in the grouping register.
This document discusses quality assurance in blood banking. It outlines the quality control processes that should be followed at various stages of blood collection and processing, including donor selection, blood collection, component preparation, storage, and transportation. Key aspects of quality control covered are premises and facility requirements, equipment calibration and maintenance, reagent quality control, and infectious disease testing quality assurance. The document provides details on acceptable parameters and frequencies of quality control checks for various blood components.
Quality assurance in blood banking involves implementing quality control checks at various stages of the blood collection and processing process. This includes donor screening, blood collection following aseptic techniques, proper storage and labeling of blood components, sterility testing, equipment calibration, and testing blood components for key attributes like volume and factors. Regular internal and external quality audits help ensure standards are maintained.
Washed red blood cell suspensions are prepared to remove plasma proteins that could interfere with antigen-antibody reactions during blood typing tests. The red blood cells are separated from whole blood via centrifugation and washed with saline to remove plasma. This helps remove soluble antigens, interfering proteins, and substances that could cause false positive reactions. The washed red blood cells are then suspended in saline at a 3-5% concentration for use in blood typing tests.
The document discusses different methods of blood collection including capillary, venous, and arterial blood. It describes the equipment and procedures used to collect blood via these methods and the tests that each type is suited for. The document also outlines the various anticoagulants used in blood collection tubes, including EDTA, citrate, heparin, oxalate, and their mechanisms and uses. Finally, it addresses the order that tubes should be drawn in and storage of blood in blood banks.
The document provides information on urinalysis including guidelines for sample collection and storage. It discusses the various reasons urinalysis is performed such as to evaluate health, diagnose metabolic diseases, and monitor conditions like diabetes. Components normally present in urine like volume, pH, and inorganic/organic constituents are outlined. The document also describes the types of urinalysis including physical, chemical, microscopic, and cultural examinations. Microscopic examination involves identifying organized elements like epithelial cells, RBCs, WBCs, and casts as well as unorganized elements such as crystals and sediments.
This document discusses the Lupus erythematosus cell (LE cell), which is a neutrophil or monocyte that has ingested altered nuclear material from another cell. The presence of LE cells in blood smears is strongly suggestive of systemic lupus erythematosus (SLE). The document describes a method called the Rotary Method of Zinkham and Conley for inducing the formation of LE cells from a patient's blood sample through rotation and heating. It notes that a positive LE cell test is found in 75% of SLE patients but there can be false positives, so it is not a definitive diagnostic test.
This document provides information about urine analysis including collection and preservation of urine samples, physical examination of urine, and chemical examination of urine.
Key points include: urine should be collected in a clean, dry container; physical properties examined include volume, color, odor, appearance and specific gravity; chemical tests can detect proteins, sugars, pH, and other substances; abnormal results may indicate conditions like urinary tract infections, kidney diseases, or metabolic disorders. Precise methods are described to test for proteins, sugars, pH, and other urine components. Interpretation of results is provided to evaluate both normal and pathological findings.
This document discusses donor selection and blood collection procedures. It outlines strategies for donor recruitment including voluntary, social persuasion, and remunerated donations. The donor selection process involves counseling, screening donors using a questionnaire and health check, and determining temporary or permanent deferrals. Blood collection follows standard safety procedures using approved equipment and materials while monitoring the donor's health.
1. Microscopic examination of urine sediment involves centrifuging urine to concentrate any cells, casts, crystals, or other structures present.
2. Common findings include red and white blood cells, epithelial cells, hyaline casts, calcium oxalate crystals, and triple phosphate crystals.
3. The presence and amounts of these components provide diagnostic information, such as renal infection from white blood cell casts or glomerular disease from red blood cell casts.
Chapter 5. Microscopic examination of urine pptreshadnuredin1
This chapter discusses microscopic examination of urine sediment. Key points include:
1) Microscopic examination provides valuable diagnostic information by identifying normal and abnormal urine sediments such as red blood cells, white blood cells, epithelial cells, casts, crystals, and bacteria.
2) The procedure for microscopic examination involves mixing and centrifuging a urine sample, examining the resuspended sediment under low and high power objectives, and reporting the results both quantitatively and qualitatively.
3) Common organized sediments include red and white blood cells, epithelial cells from the kidney, bladder, and urethra, and hyaline casts which indicate renal proteinuria. Abnormal quantities or types of sediments provide clues to urinary tract diseases.
This document provides information on microscopic urinalysis and urinary sediments. It discusses the importance of examining sediments to detect and identify insoluble materials in urine. Proper specimen collection and preparation are outlined, along with examination of common constituents like red and white blood cells, epithelial cells, casts, crystals, and other elements. Findings are interpreted to indicate various renal and urinary tract conditions like infection, inflammation, injury, and disease.
This document describes the characteristics, clinical significance, and identification of various components that may be observed in a urinary sediment analysis under a microscope. It covers red blood cells, white blood cells, squamous epithelial cells, renal tubular epithelial cells, casts, crystals, and various contaminants. The main cellular and non-cellular elements are described in terms of their morphology, origin, and association with different renal and urinary tract conditions.
This document provides an overview of urinalysis, which is a key test in clinical nephrology. It describes the aims of urinalysis to examine the physical characteristics, chemical composition, cellular elements, and microorganisms in urine. It then explains how dipstick tests can assess various analytes like pH, protein, blood, and others. The document also covers urine microscopy to examine elements like erythrocytes, leukocytes, epithelial cells, casts, crystals, and microorganisms that can indicate underlying kidney conditions.
The peripheral blood smear examination allows for estimation of cellular elements, morphology analysis of red blood cells, white blood cells, and platelets, and detection of blood parasites. Red blood cell morphology is assessed by size, shape, color, and inclusions. Abnormal shapes include elliptocytes, spherocytes, schistocytes, and sickle cells. White blood cell differential count and morphology is also evaluated. Platelet number and morphology is examined to confirm thrombocytopenia. The peripheral smear is a useful test to analyze blood cell types and detect various hematological disorders and conditions.
Blood is a connective tissue composed of plasma and cellular elements. Plasma is 55% of blood and contains water, proteins, nutrients, gases, and electrolytes. It transports these throughout the body. The cellular elements are red blood cells, white blood cells, and platelets. Red blood cells contain hemoglobin and transport oxygen and carbon dioxide. White blood cells help fight infection in different ways. Platelets help the blood clot and prevent bleeding. The study of blood is called hematology.
This document provides an introduction to hematology and summarizes key topics including:
1. The components of blood and cellular elements such as red blood cells, white blood cells, and platelets.
2. Principles of hematologic diagnosis including medical history, physical examination, and laboratory evaluations like complete blood count and peripheral blood smear.
3. Causes of anemia including hypoproliferative anemias like anemia of chronic disease and anemia of renal disease.
4. Aplastic anemia, its definition, epidemiology, etiology including acquired, inherited, and secondary causes.
This ppt covers composition and functions of blood in a systematic and interactive manner. I hope this PPT will be helpful for instructor's as well as students.
Blood is a connective tissue composed of plasma and cellular elements. Plasma is 55% of blood volume and contains water, proteins, nutrients, gases, and electrolytes. Red blood cells carry oxygen and carbon dioxide. White blood cells defend against pathogens and include granulocytes like neutrophils and agranulocytes like lymphocytes. Platelets help form blood clots to stop bleeding. The production of red blood cells, white blood cells, and platelets is regulated to maintain appropriate blood cell counts.
The document summarizes key information about hematology and blood components. It describes that blood is a red fluid that makes up 8% of body weight in humans. It functions to transport gases, nutrients, hormones, and enzymes, while regulating pH and temperature. Blood also functions in clotting. The components of blood include plasma, red blood cells, white blood cells, and platelets. Several blood disorders are also summarized such as anemia, polycythemia, sickle cell anemia, and leukemia. Common blood tests and their purposes are listed as well.
Visual inspection guide for blood compopnentsqueueup
This guide has been produced for use by both Canadian
Blood Services and hospital personnel.
This guide is divided into four sections covering the
four blood components. Each section begins with a
brief explanation of the component, a description of the
variations in appearance for that component and criteria for
acceptability.
Blood is a liquid connective tissue composed of plasma and formed elements suspended within. Plasma is 55% of blood volume and contains proteins, salts, nutrients. Formed elements include red blood cells (RBCs), white blood cells (WBCs), and platelets. RBCs contain hemoglobin and transport oxygen, while WBCs defend against pathogens. Platelets help clot blood to stop bleeding. Blood composition and cell characteristics provide important clinical information about health status.
This document provides an overview of peripheral blood smear examination. Key points include:
- A peripheral smear can provide information about red blood cells, white blood cells, and platelets to help diagnose anemias and other hematological disorders.
- Proper collection, staining, and microscopic evaluation are important for accurate results. Common stains include Leishman's, Giemsa, and Wright stains.
- Features of red blood cells like size, shape, color, and inclusions provide clues to different anemias. White blood cell differentials help identify infections and disorders.
- Artifacts can occur but proper technique and examination of multiple fields helps distinguish real from artifactual findings.
body fluids analysis - corrected - Copy.pptxSURAJ PANCHAL
The document provides an overview of body fluid analysis. It discusses the different types of body fluids that are commonly examined, including urine, cerebrospinal fluid, pleural fluid, pericardial fluid, peritoneal fluid, and synovial fluid. It describes how fluids are divided into two compartments - extracellular and intracellular fluid. The document also explains the differences between transudates and exudates, and discusses sample collection and various examinations including physical, chemical, and microscopic analysis that are performed on body fluids to aid in diagnosis.
This document provides information on examining a peripheral blood smear, including specimen collection, smear preparation, staining, and examination. It discusses collecting a blood sample in an EDTA tube to prevent clotting. For smear preparation, the wedge technique is described as the most common method used. Proper staining is also outlined, typically using Wright-Giemsa stain. Examination involves assessing smears under different magnifications to evaluate cell morphology and counts of red blood cells, white blood cells, and platelets.
BODY FLUIDS EXAMINATION.pptx FOR MBBS AND PGNehaBanseria1
Eleven body fluids we couldn't live without
Bile. Bile is a brown to dark green fluid that is produced by the liver, stored in the gallbladder (a synonym for bile is gall), and released into the intestines when we eat. ...
Blood. Give a little. ...
Menstrual fluid. ...
Mucus. ...
Pus. ...
Semen. ...
Saliva. ...
Sweat.
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Analysis of Body Cavity Fluids
Sep 08, 2014
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Analysis of Body Cavity Fluids. Lab 8. Indications and Sampling. Indications: - Identifies the type of fluid present: transudate, exudate, neoplastic or other effusion and may identify the cause of fluid accumulation Sampling: - Sterile preparation of site
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Analysis of Body Cavity Fluids
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Analysis of Body Cavity Fluids Lab 8
Indications and Sampling Indications: - Identifies the type of fluid present: transudate, exudate, neoplastic or other effusion and may identify the cause of fluid accumulation Sampling: - Sterile preparation of site - Use a fine needle (21- 23 G) - Avoid movement or causing pain during sampling - Split sample into EDTA & plain sterile tubes - Process as soon as possible - Monitor the animal
Tests Applied Four basic tests are applied: • Appearance of fluid • Protein content • Nucleated cell count (NCC) • Examination of a direct and/or sediment smear to identify cell type Additional tests such as biochemistry may be used in certain clinical situations, e.g. urea or creatinine, if uroabdomen (from bladder rupture) is suspected.
Specimen Management for Smears - Mix sample well - Make a direct smear - Centrifuge & smear the deposit (sediment smears) - Air-dry rapidly & stain Special centrifuges (cytocentrifuges) yield better smears A standard centrifuge may be used at a slow speed for a short period (<1000 rpm)
Procedure to get a smear “Wedge” method Flat-slide method A drop of the fluid is placed on a cleaned glass slide A smear can be made by the “wedge” method used for making blood smears Alternatively, a 2nd slide may be superimposed on the first, and the two are drawn smoothly apart to make two thin smears.
Examination of sediment smears • Blood stains e.g. Diff-Quik or Giemsa usually used • The smear is scanned at low power, to locate cells and cell clusters • NORMAL FINDINGS: N
Blood is a connective tissue that circulates through the body carrying out important transport functions. It consists of plasma and formed elements, including red blood cells, white blood cells, and platelets.
Red blood cells contain hemoglobin and transport respiratory gases. White blood cells help fight infection and are classified as granulocytes (neutrophils, eosinophils, basophils) or agranulocytes (lymphocytes, monocytes). Platelets initiate blood clotting.
Together, the components of blood work to transport substances throughout the body, remove waste, and protect against disease as part of the vital functions performed by this circulating connective tissue.
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2. Preparation oftheUrine Sediment
Freshly voided urine
midstream clean-catch specimen
10 and 15 mL (12ml)
Centrifuged for 5 mins @ 400RCF
0.5-1.0 mL left after decantation
Represents urinary sediments
Agitate
Place a drop (20 μL or 0.02 mL) of centrifuged urine in a
slide + glass cover slip (22 X22 mm )
Read microscopically
3. Examination oftheUrine Sediment
Observe minimum of 10 fields [both low & high PF]
LPF (10x)
detect casts and to ascertain the general
composition of the sediment
HPF (40x)
Identification
casts have a tendency to locate near the edges of
the cover slip (LPFscanning around the cover slip
perimeter)
4. Examination oftheUrine Sediment
Bright field microscopy (unstained sediments)
Artifacts are larger than urinary sediments
Reportingof Microscopic Sediments
Sediment Reporting Comment
Casts Lpf 10 fields
RBCs, WBCs Hpf
Epithelial cells,
crystals, and
other elements
Semi-
quantitative
terms
rare, few, moderate, and
many, or as 1+, 2+, 3+, and
4+, following laboratory
format as to lpf or hpf use
5. Reportingof Microscopic Sediments
Manner of Comment
Reporting
Occasional 0-1, 0-3/HPFat 10 fields
Few 0-4, 2-5/HPFat 10 fields
Some 3-5, 8-10/HPFat 10fields
Moderate More than 10/HPFat 10 fields
Many Abundant/HPF
TNTC Too numerous to count (loaded)
Examination of theUrine Sediment
6. Sediment ExaminationTechniques (Stains)
Stain Action Function
Sternheimer-
Malbin (Crystal
violet &Safranin
O)
Delineates structure
and contrasting
colors of the nucleus
and cytoplasm
Identifies WBCs,
epithelial cells, and
casts
Toluidine blue Enhances nuclear
detail
Differentiates WBCs
and renal tubular
epithelial (RTE) cells
2
%
acetic acid Lyses RBCs and
enhances nuclei of
WBCs
Distinguishes RBCs
from WBCs, yeast,
oil droplets, and
crystals
7. Sediment ExaminationTechniques (Stains)
Stain Action Function
Lipid Stains:Oil
Red O and
Sudan I
I
I
Stains triglycerides
and neutral fats
orange-red
Identifies free fat droplets
and lipid-containing cells
and casts
Gram stain Differentiates gram-
positive and gram-
negative bacteria
Identifies bacterial casts
Hansel stain Methylene blue and
eosin Y stains
eosinophilic granules
Identifies urinary
eosinophils
Prussianblue
stain
Stains structures
containing iron
Identifies yellow-brown
granules of hemosiderin in
cells and casts
8. Expected StainingReactions of Sediment
Constituents
Elementsin
UrinarySediment
UsualDistinguishingColor of
Stained Elements
Comments
RBCs Neutral—pink to purple
Acid—pink (unstained)
Alkaline—purple
Hyaline casts Pale pink or pale purple Very uniform color;
slightly darker than
mucous threads
Coarse granular
inclusion casts
Dark purple granules in
purple matrix
Finely granular
inclusion casts
Fine dark purple granules in
pale pink or pale purple
matrix
9. Expected Staining Reactions of Sediment
Constituents
Elementsin Urinary
Sediment
UsualDistinguishingColor of
Stained Elements
Comments
Nuclei Cytoplasm
WBCs(dark-staining
cells)
Purple Purple granules
Glittercells
(Sternheimer-
Malbin positive
cells)
Colorless or
light blue
Pale blue or gray Some glitter
cells exhibit
brownian
movement
Renal tubular
epithelial cells
Dark shade of
blue-purple
Light shade of
blue-purple
Bladder tubular
epithelial cells
Blue-purple Light purple
Squamous
epithelial cells
Dark shade of
orange-purple
Light purple or
blue
10. Expected Staining Reactions of Sediment
Constituents
Elementsin Urinary
Sediment
UsualDistinguishing
Color ofStained
Elements
Comments
Waxy casts Pale pink or pale purple Darker than hyaline casts, but
of a pale even color; distinct
broken ends
Fatinclusion casts Fat globules unstained
in a pink matrix
Rare; presence isconfirmed if
examination under polarized
light indicates double
refraction
Red cell inclusion
casts
Pink to orange-red Intact cells can be seen in
matrix
Blood (hemoglobin)
casts
Orange-red No intact cells
11. Expected StainingReactions of Sediment
Constituents
Elementsin Urinary
Sediment
UsualDistinguishing
Color ofStained
Elements
Comments
Bacteria Motile: do not stain
Nonmotile: stain
purple
Motile organisms are not
impaired
Trichomon
as vaginalis
Light blue-green Motility isunimpaired in fresh
specimens when
recommended volumes of
stain are used; immobile
organisms also identifiable
Mucus Pale pink or pale blue
Background Pale pink or pale
purple
12. Cytodiagnostic Urine Testing
preparation of permanent slides using
cytocentrifugation
Staining with Papanicolaou stain
Detection of malignancies of the lower urinary tract
First morning specimen
provides more definitive information about renal tubular
changes associated with transplant rejection; viral,
fungal, and parasitic infections; cellular inclusions;
pathologic casts; and inflammatory conditions
13. UrinalysisMicroscopic Techniques
Technique Function
Bright-field microscopy Used for routine urinalysis
Phase-contrast microscopy Enhances visualization of
elements with low refractive
indices, such as hyaline casts,
mixed cellular casts, mucous
threads, and Trichomonas
Polarizing microscopy Aids in identification of
cholesterol in oval fat bodies,
fatty casts, and crystals
14. UrinalysisMicroscopic Techniques
Technique Function
Dark-field microscopy Aids in identification of
Treponema pallidum
Fluorescence microscopy Allows visualization of naturally
fluorescent microorganisms or
those stained by a fluorescent
dye
Interference- contrast Produces a three-dimensional
microscopy-image and layer-
by-layer imaging of a specimen
15. Sediment Constituents
Red Blood Cell (RBC)
Pointof reference Description
Appearance • Non-nucleated biconcave disks
• Crenated in hypertonic urine
• Ghost cells in hypotonic urine
• Dysmorphicwith glomerular
membrane damage
Sources of
Identification error
• Yeast cells
• Oil droplets
• Air bubbles
Reporting Average number per 10 hpfs
Complete urinalysis
correlation
• Color
• Reagent strip blood reaction
21. Sediment Constituents
Epithelial Cells (Squamous)
Pointof reference Description
Appearance • Largest cells in the sediment with
abundant, irregular cytoplasm and
prominent nucleii
Sources of
Identification error
• Rarely encountered, folded cells may
resemble casts
Reporting • Rare, few, moderate, or many per lpf
Complete urinalysis
correlation
• Clarity
30. Sediment Constituents
Bacteria
Pointof reference Description
Appearance • Small spherical and rod-shaped
structures
Sources of
Identification error
• Amorphous phosphates and urates
Reporting • Few, moderate, or many per hpf, the
presence of WBCs may be required
Complete urinalysis
correlation
• pH
• Nitrite
• LE
• WBCs
32. Sediment Constituents
Yeast
Pointof reference Description
Appearance • Small, oval, refractile structures with
buds and/or mycelia
Sources of
Identification error
• RBCs
Reporting • Rare, few, moderate, or many per hpf,
the presence of WBCs may be required
Complete urinalysis
correlation
• Glucose
• LE
• WBCs
38. Sediment Constituents
Mucus
Pointof reference Description
Appearance • Single or clumped threads with a
low refractive index
Sources of
Identification error
• Hyaline casts
Reporting • Rare, few, moderate, or many per
lpf
Complete
urinalysis
correlation
• None
40. UrineCasts
Unique to kidney
Formed within the lumen of DCT & CD
Provides microscopic view of condition w/in
nephron
Lpf detection/Scanning around cover slip edge
Low refractive index observe in subdued light
Reporting: Ave. #/10 lpf
41. Casts (Composition and Formation)
Tamm-Horsfall protein
- major constituent of cast
- stress & exercise
Albumin, immunoglobulin
Protein gel urine-flow stasis, acidity, Na+, Ca++
Tapered end formed at the junction of ALH& DCT
-cylindroids
Cylindruria presence of urinary cast
42. Hyaline Casts
Pointof reference Description
Appearance • Colorless homogenous matrix
Sources of
Identification error
• Mucus, fibers, hair, increased lighting
Reporting • Average number per lpf
Complete urinalysis
correlation
• Protein -Blood (exercise)
• Color (exercise)
Clinical significance • Glomerulonephritis
• Pyelonephritis
• Chronic renal disease
• Congestive heart failure
• Stress and exercise
53. Granular Casts
Pointof reference Description
Appearance Coarse and fine granules in a cast
matrix
Sources of
Identification error
• Clumps of small crystals
• Columnar RTEcells
Reporting • Average number per lpf
Complete urinalysis
correlation
• Protein
• Cellular casts
• RBCs & WBCs
Clinical
significance
• Glomerulonephritis
• Pyelonephritis
• Stress and exercise
57. Broad Casts
Pointof reference Description
Appearance • Wider than normal cast matrix
Sources of
Identification error
• Fecal material, fibers
Reporting • Average number per lpf
Complete
urinalysis
correlation
• Protein
• WBCs & RBCs
• Granular casts
• Waxy casts
Clinical
significance
• Extreme urine stasis
• Renal failure
58. UrineCrystals
detect the presence of the relatively few
abnormal types
-liver disease
-inborn errors of metabolism
-renal damage
Reporting: rare, few, moderate, or many per hpf
Abnormal crystals average number per lpf
59. UrineCrystals
formed by the precipitation of urine solutes
Subject to: changes in temperature, solute
concentration, and pH (affect solubility)
Rapidly precipitates at low temperature
Presence of crystals in fresh urine high sp. Gr.
pH determine type of crystal present
*Organic & iatrogenic compounds ppts. Inacidic
pH
*inorganic salts ppts in neutral & alkaline sol’n
*except: CaOx ppts in acidic & neutral urine
60. Normal Crystal Seen inAcidic Urine
Crystal Color &Shape Solubility Appearnce
Uric Acid Yellow-brown
(rhombic/4-
sided/rosette)
Alkali
Soluble
Amorphous
urates
Brick dust or
yellow brown
granules
Alkali and
heat
Calcium
oxalate
[Acid/neutral
(alkaline)]
Colorless
(envelopes, oval,
dumbbell,
octahedral)
Dilute HCl
71. Abnormal Crystals seen inAcid Urine
Crystal/Colo
r/shape
Comment Solubility Appearnce
Cystine
• Colorless
• Hexagon
al plates
• Cystinuria
metabolic
disorder of renal
tubules
• Confirmation test
cyanide-
nitroprusside test
Ammonia,
dilute HCl
Cholesterol
• Colorles
s
notched
plates
• Seen in
refrigerated
specimen
(droplet form
lipids)
• Nephrotic
syndrome
Chloroform
72. Crystal/Color Comments Solubility Appearan
c e
Bilirubin
• Yellow
• clumped
needles or
granules
• present in
hepatic
disorders
• positive
chemical test
result for
bilirubin would
be expected
Acetic
acid, HCl,
NaOH,
ether,
chloroform
Radiograph
ic dye
• Colorless
• Cholestero
l crystal
• Markedly high
specific gravity
when
measured by
refractometer
10% NaOH
Abnormal Crystals seen inAcid Urine
77. Abnormal Crystalsseen inAcid/Neutral Urine
Crystal/Color Comments Solubility Appearance
Leucine
• Yellow-brown
• Spheres
(concentric
circles and
radial striations)
• Crystals Associated
WithLiverDisorders
• Presence should be
accompanied by
tyrosine crystals
Hot alkali or
alcohol
Tyrosine
• Colorless–yellow
• Fine needle
(clump or
rosette form)
• seen in conjunction
with leucine crystals in
specimens with
positive chemical test
results for bilirubin
• May be encountered
in inherited disorders
of amino-acid
metabolism
Alkali or
heat
78. Abnormal Crystals seen inAcid/Neutral Urine
Crystal/Color Comments Solubility Appearance
Sulfonamides
• Varied (olorless to
yellow-brown)
• Needles, rhombics,
whetstones, sheaves
of wheat, and
rosettes
• Seen in inadequate
patient hydration
• possibility of tubular
damage ifcrystals are
forming in the
nephron
Acetone
Ampicillin
• Colorless
• needles (form
bundles following
refrigeration
• Seen in massive doses
of this penicillin
compound without
adequate hydration
Refrigera-
tion forms
bundles
83. UrinarySediment Artifacts
Contaminants from improper collection
starch, oil droplets, air bubbles, pollen grains,
fibers, and fecal contamination
often very highly refractile or occur in a different
microscopic plane
Not necessarily to be reported
84. UrinarySediment Artifacts
Artifact Comments Appearance
Starch Granule
• Resemble fat
droplets when
polarized
• Dimpled center
• From cornstarch
used as glove
powder
• Highly refractile
sphere
Oil Droplets
• From OIO
contamination
• highly refractile
and may
resemble RBCs
Air Bubbles
• occur when the
specimen isplaced
under a cover slip
t
85. UrinarySediment Artifacts
Artifact Comments Appearance
Pollen grains
• Concentric
circles
• spheres with a cell wall
and occasional
concentric circles
Hairand fibers
fromclothing
and diapers
• mistaken for casts
• usually much longer
and more refractile
Fecal Artifacts
• variety of
sizes and
shapes
• presence of a fistula
between the intestinal
and urinary tracts
• appear as plant and
meat fibers or as brown
amorphous material