MLT

Anticoagulant of choice for a CBC: - Answer EDTA lavender top EDTA works by: - Answer Binding calcium. Prevents fibrinogen from converting to fibrin and thus prevents clot formation Erythrocytes: - Answer Elastic, non-nucleic, flexible, biconcave disc Erythrocyte size: - Answer 6-8 microns Lifespan of an erythrocyte: - Answer 120 days The main content of erythrocytes: - Answer Hemoglobin How are RBCs removed from the peripheral blood? - Answer 90% removed by the s...

Hematology is the study of - Answer Blood cells The morphology of blood cells is important to evaluate - Answer when flag limits established by medical laboratory scientists in the laboratory are exceeded. Who is ultimately responsible for determining the specimen integrity before analysis? - Answer medical laboratory professional Hematocrit is also called - Answer Packed red cell volume The primary function of platelets is to - Answer facilitate blood clotting Which of ...

What are the three classifications of laboratory hazards? - Answer Physical, Chemical and Biological What governmental agency is responsible for enforcing safety regulations in the workplace? - Answer OSHA What class of biological safety cabinet is most commonly used in clinical laboratories? - Answer Class II What personal protective equipment is commonly worn when working in the biological laboratory? List four items - Answer 1. Gloves 2. Fluid-resistant gowns 3. Face shields ...

Hematology - Answer the study of blood Average adult has how much blood? - Answer About 5-6 liters (8-12 pints) When blood is centrifuges what happens? - Answer It seperates into two distinct portions plasma & cells About 45% is cellular or formed elements called? - Answer RBCs, WBCs, and platelets RBCs - Answer Contain hemoglobin which carries oxygen to tissues WBCs - Answer defend against foreign infectious agents (such as bacteria, viruses, fungi, etc.

To correctly report a colony count in a urine culture plated using a calibrated 0.001 mL loop, the observed colony count must be multiplied by which of the following? a. 1 b. 100 c. 1000 d. 2000 - Answer c. 1000 Examination of peripheral blood smear revealed 12 nucleated erythrocytes per 100 leukocytes. Which histogram observation correlates with this finding? a. Failure of the granulocyte population to return to baseline on the leukocyte histogram b. Shift to the left of the erythro...

Characteristics of Immunogens (antigens) that affect immunogenicity correct answer: 1. Large molecule - Molecular weight of at least 10 KDa 2. High complexity - Simple repeating units do not make good immunogens 3. Chemical composition- Proteins and polysaccharides are better than carbohydrates, lipids and nucleic acids 4. Foreignness- the more different from the host, the more immunogenic Types of immunity correct answer: Active - individual produces antibody follows immunization or inf...

Each of the following samples may be used in hematology except: a. serum from a clot tube b. EDTA whole blood c. Sodium citrate whole blood d. Heparinized capillary blood correct answer: a. serum from a clot tube A 1:200 dilution of a patient's sample was made and 336 red cells were counted in an area of 0.2 mm2. What is the RBC count? a. 1.68 x 1012/L b. 3.36 x 1012/L c. 4.47 x 1012/L d. 6.16 x 1012/L correct answer: b. 3.36 x 1012/L Which one of the following conditions ...

List few common intestinal protozoa Correct Answer: Entamoeba histolytica, Giardia lambila List few blood or tissue protozoa Correct Answer: Plasmodium, Trypanosoma, Leshmania, Toxoplasma What is a common urogenital parasite? Correct Answer: Trichomonas vaginalis What is the infective stage of Plasmodium? Correct Answer: Sporozoite What is the infective stage of E. histolytica? Correct Answer: Cyst of E. histolytica What do u expect to find in diarrheal stool of a patient wit...

What are the three classifications of laboratory hazards? Correct Answer: Physical, Chemical and Biological What governmental agency is responsible for enforcing safety regulations in the workplace? Correct Answer: OSHA What class of biological safety cabinet is most commonly used in clinical laboratories? Correct Answer: Class II What personal protective equipment is commonly worn when working in the biological laboratory? List four items Correct Answer: 1. Gloves 2. Fluid-resistan...