This document discusses the collection, transportation, preparation, processing, and storage of laboratory samples for disease diagnosis and monitoring. It describes various sample types including blood, urine, cerebrospinal fluid, and semen. Proper collection, labeling, transportation, and storage methods are outlined to ensure sample integrity and avoid errors. Samples must be kept under appropriate temperature and time conditions depending on the analysis and test being performed. Adherence to standards helps provide accurate test results for patient diagnosis and treatment.