ASCP MLS Hematology || with 100% Errorless Answers.
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Course
ASCP MLS Hematology |
Institution
ASCP MLS Hematology |
Where does hematopoiesis occur in a fetus? correct answers It starts in the yolk sac, then liver, spleen, then bone marrow at approximately 6 months after conception
What is the order of immature to mature segmented neutrophils? correct answers myeloblast, promyelocyte, myelocyte, metamyelocyte,...
ASCP MLS Hematology || with 100% Errorless Answers.
Where does hematopoiesis occur in a fetus? correct answers It starts in the yolk sac, then liver,
spleen, then bone marrow at approximately 6 months after conception
What is the order of immature to mature segmented neutrophils? correct answers myeloblast,
promyelocyte, myelocyte, metamyelocyte, band, seg
What is the order of heme precursors? correct answers while in the DELTA, POUR YOUR COP,
PRONTO, a cup of HEME.
What causes porphyria? correct answers excessive formation of porphyrins due to a step in the
heme synthesis being blocked
What hemoglobin chains make embryonic hemoglobin? correct answers 2 alpha, 2 epsilon
What hemoglobin chains make Hgb F? correct answers 2 alpha, 2 gamma
What hemoglobin chains make Hgb A2? correct answers 2 alpha, 2 delta
What hemoglobin chains make Hgb A? correct answers 2 alpha, 2 beta
What chromosomes house genetic material for hemoglobin? correct answers Chromosome 16
(alpha and zeta)
Chromosome 11 (epsilon, gamma, delta, beta)
Under what conditions does hemoglobin release oxygen more easily? correct answers CADET
face right (causes right shift in dissociation curve)
increased
Carbon dioxide
Acid (decreased pH)
2,3 DPG
Exercise
Temperature
What hemoglobin is consider a high affinity hemoglobin? correct answers Hemoglobin F
What are sources of error in hemoglobin levels from an analyzer? correct answers lipemia
high wbc
, resistant hgb (SS or CC)
excess hemolysis
What is the reference range for hemoglobin in males? correct answers 16+/-2 g/dL
What is the reference range for hemoglobin in females? correct answers 14+/- 2 g/dL
Caroxyhemoglobin is associated with what? correct answers CO poisoning, causes blood to be
cherry red
What causes methemoglobin? correct answers Fe2+ is oxidized to Fe3+ and cannot bind O2.
Color is brown
What type of hemoglobin variant cannot be measured by the cyanmethemoglobin method?
correct answers sulfhemoglobin
What does hematocrit measure? correct answers packed cell volume in percent
In an automated method, which is measured hematocrit or MCV? correct answers MCV,
Hematocrit is calculated from MCV and RBC
What is the hematocrit reference range for males? correct answers 42-52%
What is the hematocrit reference range for females? correct answers 37-47%
What is the formula for a manual cell count? correct answers # cells *1/total volume*dilution
factor
What is the total volume used for a WBC count (using a hemocytometer) and how many squares
are counted? correct answers 0.9mm3
count in all 9 large squares
What is the total volume used for a platelet count (using a hemocytometer) and how many
squares are counted? correct answers 0.1mm3
count in the squares in the center square.
What is the formula for MCV? correct answers HCT/RBC*10
What is the reference range for MCV? correct answers 80-100 fL
What is the formula for MCH? correct answers HB/RBC*10
What is the reference range for MCH? correct answers 28-32 pg
What is the formula for MCHC correct answers HB/HCT*100
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