ASCP HEMATOLOGY FINAL EXAM ACTUAL QUESTIONS
AND ANSWERS GRADED A+
✔✔Which of the following is most likely to be seen in lead poisoning?
A. iron overload in tissue
B. codocytes
C. basophilic stippling
D. ringed sideroblasts - ✔✔C. basophilic stippling
✔✔The characteristic morphologic feature in lead poisoning is:
A. macrocytosis
B. target cells (codocytes)
C. basophilic stippling
D. rouleax formation - ✔✔C. basophilic stippling
✔✔Which of the following technical factors will cause a decreased erythrocyte
sedimentation rate?
A. gross hemolysis
B. small fibrin clots in the sample
C. increased room temperature
D. tilting of the tube - ✔✔B. small fibrin clots in sample
✔✔Which of the RBC indices is a measure of the amount of hemoglobin in individual
red blood cells?
A. MCHC
B. MCV
C. Hct
D. MCH - ✔✔D. MCH
✔✔The RDW-CV and RDW-SD performed by automated cells counters are calculations
that provide:
A. an index of the distribution of RBC volumes
B. a calculated mean RBC hemoglobin concentration
C. a calculated mean cell hemoglobin
D. the mean RBC volume - ✔✔A. an index of the distribution of RBC volumes
✔✔The erythrocyte sedimentation rate (ESR) can be falsely elevated by:
A. tilting the tube
B. refrigerate blood
, C. air bubbles in the column
D. specimen too old - ✔✔A. tilting the tube
✔✔Which of the following is the formula for absolute cell count?
A. number of cells counted/total count
B. total count/number of cells counted
C. 10 x total count
D. % of cells counted x total cell count - ✔✔D. % of cells counted x total cell count
✔✔The laboratory tests performed on a patient indicate macrocytosis, anemia ,
leukopenia, and thrombocytosis. Which of the following disorders is the patient most
likely to have?
A. iron deficiency
B. hereditary spherocytosis
C. vitamin B12 deficiency
D. acute hemorrhage - ✔✔C. vitamin B12 deficiency
✔✔The mean value of a reticulocyte count on specimens of cord blood from healthy,
full-term newborns is approximately:
A. 0.5%
B. 2.0%
C. 5.0%
D. 8.0% - ✔✔C. 5.0%
✔✔A red blood cell about 5 um in diameter that stains bright red and shows no central
pallor is a:
A. spherocyte
B. leptocyte
C. microcyte
D. macrocyte - ✔✔A. spherocyte
✔✔The following results were obtained on a patient's blood:
Hgb: 11.5 g/dL (115 g/L)
Hct: 40%
MCV: 89 um^3 (89 fL)
MCH: 26 pg
MCHC: 29%
Examination on wright's stained smear of the same sample would most likely show:
A. macrocytic, normochromic erythrocytes
B. microcytic, hypochromic erythrcytes
AND ANSWERS GRADED A+
✔✔Which of the following is most likely to be seen in lead poisoning?
A. iron overload in tissue
B. codocytes
C. basophilic stippling
D. ringed sideroblasts - ✔✔C. basophilic stippling
✔✔The characteristic morphologic feature in lead poisoning is:
A. macrocytosis
B. target cells (codocytes)
C. basophilic stippling
D. rouleax formation - ✔✔C. basophilic stippling
✔✔Which of the following technical factors will cause a decreased erythrocyte
sedimentation rate?
A. gross hemolysis
B. small fibrin clots in the sample
C. increased room temperature
D. tilting of the tube - ✔✔B. small fibrin clots in sample
✔✔Which of the RBC indices is a measure of the amount of hemoglobin in individual
red blood cells?
A. MCHC
B. MCV
C. Hct
D. MCH - ✔✔D. MCH
✔✔The RDW-CV and RDW-SD performed by automated cells counters are calculations
that provide:
A. an index of the distribution of RBC volumes
B. a calculated mean RBC hemoglobin concentration
C. a calculated mean cell hemoglobin
D. the mean RBC volume - ✔✔A. an index of the distribution of RBC volumes
✔✔The erythrocyte sedimentation rate (ESR) can be falsely elevated by:
A. tilting the tube
B. refrigerate blood
, C. air bubbles in the column
D. specimen too old - ✔✔A. tilting the tube
✔✔Which of the following is the formula for absolute cell count?
A. number of cells counted/total count
B. total count/number of cells counted
C. 10 x total count
D. % of cells counted x total cell count - ✔✔D. % of cells counted x total cell count
✔✔The laboratory tests performed on a patient indicate macrocytosis, anemia ,
leukopenia, and thrombocytosis. Which of the following disorders is the patient most
likely to have?
A. iron deficiency
B. hereditary spherocytosis
C. vitamin B12 deficiency
D. acute hemorrhage - ✔✔C. vitamin B12 deficiency
✔✔The mean value of a reticulocyte count on specimens of cord blood from healthy,
full-term newborns is approximately:
A. 0.5%
B. 2.0%
C. 5.0%
D. 8.0% - ✔✔C. 5.0%
✔✔A red blood cell about 5 um in diameter that stains bright red and shows no central
pallor is a:
A. spherocyte
B. leptocyte
C. microcyte
D. macrocyte - ✔✔A. spherocyte
✔✔The following results were obtained on a patient's blood:
Hgb: 11.5 g/dL (115 g/L)
Hct: 40%
MCV: 89 um^3 (89 fL)
MCH: 26 pg
MCHC: 29%
Examination on wright's stained smear of the same sample would most likely show:
A. macrocytic, normochromic erythrocytes
B. microcytic, hypochromic erythrcytes
