MLPAO Test Prep ~ Hematology 200 Questions with Complete Solutions 100% Verified Correct What does CBC stand for? - Correct Answer Complete Blood Count What are the formed elements of blood? - Correct Answer WBC, RBC, and Platelets EDTA Anticoagulant - Correct Answer Maintains cell shape and size and prevents blood from clotting by binding to calcium Heparin Anticoagulant - Correct Answer Initiates cell clumping and provides blue background staining Citrate Anticoagulant - Correct Answer Dilutes the blood due to the volume of the liquid and is used for platelet count only CBC handling and storage: Refrigerate at __ᵒC until testing - Correct Answer 4 CBC handling and storage: When transporting to other labs/hospitals - Correct Answer surround with ice packs CBC handling and storage: Samples are _____ before testing - Correct Answer mixed well by inversion
CBC handling and storage: Samples must be tested within __ - Correct Answer 24h
CBC handling and storage: Peripheral blood smears must be made within - Correct Answer 24h CBC handling and storage: Samples kept for longer than ___ = CANNOT BE USED FOR TESTING - Correct Answer 24h What happens if CBC is tested after 24h? - Correct Answer Platelets clump, WBC nuclei disintegrate, WBC cytoplasm contain dark granules and Vacuoles, and RBCs swell and break down Coagulation: Specimen of choice? - Correct Answer Plasma 1 / 2
Coagulation: What colour tube? What is the additive? - Correct Answer light blue, sodium citrate Sodium Citrate binds to ___ preventing ____ - Correct Answer calcium, coagulation Sodium Citrate tube must be - Correct Answer filled to the maximum draw capacity Coagulation: Document if patient on - Correct Answer anticoagulant therapy or aspirin Handling and Storage of Coagulation samples: Preparation requirements - Correct Answer Centrifuge and separate Handling and Storage of Coagulation samples: ____ plasma if not tested within ___ of arrival - Correct Answer Freeze, 4h Coagulation samples: Some clotting factors are considered to be - Correct Answer highly labile (destroyed at room temperature) What are the three methods of Peripheral blood smears (PBS)? - Correct Answer Wedge method (manual), Spun method (automated slide spinner), and automated method (analyzer) Thickness of film: HEMOGLOBIN/HEMATOCRIT INCREASED = angle of the spreader slide ___ - Correct Answer Decreased Sodium Citrate tubes should be drawn ___ except when blood cultures are ordered. - Correct Answer First Thickness of film: HEMOGLOBIN/HEMATOCRIT DECREASED = angle of the spreader slide ___ - Correct Answer Increased
HCT Values: Male, Female - Correct Answer 0.40-0.50, 0.35-0.59
Good blood film should be ___ to ___ the length of the slide - Correct Answer 2/3, ¾
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