MLPAO TEST PREP ~ HEMATOLOGY QUESTIONS WITH CORRECT ANSWERS
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Module
MLPAO
Institution
MLPAO
MLPAO TEST PREP ~ HEMATOLOGY QUESTIONS WITH CORRECT ANSWERS
What does CBC stand for? - correct answersComplete Blood Count
What are the formed elements of blood? - correct answersWBC, RBC, and Platelets
EDTA Anticoagulant - correct answersMaintains cell shape and size and prevents blood fr...
MLPAO TEST PREP ~ HEMATOLOGY QUESTIONS WITH CORRECT ANSWERS
What does CBC stand for? - correct answers ✔✔Complete Blood Count
What are the formed elements of blood? - correct answers ✔✔WBC, RBC, and Platelets
EDTA Anticoagulant - correct answers ✔✔Maintains cell shape and size and prevents blood from clotting by binding to calcium
Heparin Anticoagulant - correct answers ✔✔Initiates cell clumping and provides blue background staining
Citrate Anticoagulant - correct answers ✔✔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 answers ✔✔4
CBC handling and storage: When transporting to other labs/hospitals - correct answers ✔✔surround with
ice packs
CBC handling and storage: Samples are _____ before testing - correct answers ✔✔mixed well by inversion
CBC handling and storage: Samples must be tested within __ - correct answers ✔✔24h
CBC handling and storage: Peripheral blood smears must be made within - correct answers ✔✔24h
CBC handling and storage: Samples kept for longer than ___ = CANNOT BE USED FOR TESTING - correct answers✔✔24h What happens if CBC is tested after 24h? - correct answers ✔✔Platelets clump, WBC nuclei disintegrate, WBC cytoplasm contain dark granules and Vacuoles, and RBCs swell and break down
Coagulation: Specimen of choice? - correct answers ✔✔Plasma
Coagulation: What colour tube? What is the additive? - correct answers ✔✔light blue, sodium citrate
Sodium Citrate binds to ___ preventing ____ - correct answers ✔✔calcium, coagulation
Sodium Citrate tube must be - correct answers ✔✔filled to the maximum draw capacity
Coagulation: Document if patient on - correct answers ✔✔anticoagulant therapy or aspirin
Handling and Storage of Coagulation samples: Preparation requirements - correct answers ✔✔Centrifuge
and separate
Handling and Storage of Coagulation samples: ____ plasma if not tested within ___ of arrival - correct answers✔✔Freeze, 4h
Coagulation samples: Some clotting factors are considered to be - correct answers ✔✔highly labile (destroyed at room temperature)
What are the three methods of Peripheral blood smears (PBS)? - correct answers ✔✔Wedge method (manual), Spun method (automated slide spinner), and automated method (analyzer)
Thickness of film: HEMOGLOBIN/HEMATOCRIT INCREASED = angle of the spreader slide ___ - correct answers✔✔Decreased
Sodium Citrate tubes should be drawn ___ except when blood cultures are ordered. - correct answers✔✔First Thickness of film: HEMOGLOBIN/HEMATOCRIT DECREASED = angle of the spreader slide ___ - correct answers✔✔Increased
HCT Values: Male, Female - correct answers ✔✔0.40-0.50, 0.35-0.59
Good blood film should be ___ to ___ the length of the slide - correct answers ✔✔2/3, ¾
Good blood film should have a slightly ___ or ____ edge - correct answers ✔✔Rounded, feathered
The angle of the spreader slide is approximately ___ degrees - correct answers ✔✔35
The greater the angle of the spreader slide the ____ and _____ the film - correct answers ✔✔Shorter, Thicker
The lower the angle of the spreader slide the ___ and ____ the film - correct answers ✔✔Longer and Thinner
Blood film should be allowed to ____ ___ completely before staining procedures - correct answers ✔✔air
dry
Fixative found in stain is - correct answers ✔✔Methanol
Slides are washed with buffer of pH ___ to develop colour on the slide - correct answers ✔✔6.4
Stain is comprised of ____ and ____ dyes - correct answers ✔✔Basic, acidic
What is the basic (cationic) dye? - correct answers ✔✔Methylene blue
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