ASCP HEMATOLOGY COMPREHENSIVE EXAM UPDATED
QUESTIONS AND ANSWERS GRADED A+
✔✔A common source of interference in the cyanmethehemoglobin method is:
A. hemolysis
B. very high WBC count
C. cold agglutinins
D. clumped platelets - ✔✔B. very high WBC count
✔✔The most appropriate screening test for detecting hemoglobin F is:
A. osmotic fragility
B. dithionite solubility
C. Kleihauer-Betke
D. heat instability test - ✔✔C. Kleihauer-Betke
✔✔The most approprite screening test for hemoglobin S is:
A. Kleihauer-Betke
B. dithionite solubility
C. osmotic fragility
D. sucrose hemolysis - ✔✔B. dithionite solubility
✔✔Hematology standards include:
A. stabilized red blood cell suspension
B. latex particles
C. stabilized avian red blood cells
D. certified cyanmethemoglobin solution - ✔✔D. certified cyanmethemoglobin solution
✔✔When using the turbidity (solubility) method for detecting the presence of
hemoglobin 2, an incorrect interpretation may be made when there is a(n):
A. concentration of less than 7g/dL ( 70 g/L) hemoglobin
B. glucose concentration greater than 150 mg/dL (8.3 mmol/L)
C. blood specimen greater than 2 hours old
D. increased hemoglobin - ✔✔D. increased emoglobin
✔✔The laboratory findings on a patient are as follows:
MCV: 55 um^3 (55 fL)
MCHC: 25%
MCH: 17 pg
A stained blood film of this patient would most likely reveal a red cell picture that is:
, A. microcytic, hypochromic
B. macrocytic, hypochromic
C. normocytic, normochromic
D. microcytic, normochromic - ✔✔A. microcytic, hypochromic
✔✔A patient has the following laboratory results:
RBC: 2.00 x 10^6/uL (2.00 x 10^12/L)
Hct: 24%
Hgb: 6.8 g/dL (68 g/L)
Reticulocytes: 0.8%
The mean corpuscular volume (MCV) of the patient is:
A. 35 um^3 (35 fL)
B. 83 um^3 (83 fL)
C. 120 um^3 (120 fL)
D. 150 um^3 (150 fL) - ✔✔C. 120 um^3 (120 fL)
✔✔A patient has a high cold agglutinin titer. Automated cell counter results reveal an
elevated MCV, MCH, MCHC. Individual erythrocytes appear normal on a stained smear,
but agglutinates are noted. The appropriate course of action would be to:
A. perform the RBC, Hgb, Hct determinations using manual methods
B. perform the RBC determination by a manual method; use the automated results for
the Hgb and Hct
C. repeat the determinations using a microsample of diluted blood
D. repeat the determinations using a prewarmed microsample of diluted blood - ✔✔D.
repeat the determinations using a prewarmed microsample of diluted blood
✔✔A blood sample from a patient with a high titer cold agglutinin, which of the following
results can occur in the presence of a cold agglutinin?
A. increased MCV and decreased RBC
B. increased MCV and normal RBC
C. decreased MCV and increased MCHC
D. decreased MCV and RBC - ✔✔D. MCV and RBC
✔✔In polycythemia vera, leukocyte alkaline phosphatase activity is:
A. elevated
B. normal
C. decreased - ✔✔A. elevated
✔✔Which of the following is the formula for mean corpuscle hemoglobin (MCH)?
A. Hct/(RBC x 1000)
QUESTIONS AND ANSWERS GRADED A+
✔✔A common source of interference in the cyanmethehemoglobin method is:
A. hemolysis
B. very high WBC count
C. cold agglutinins
D. clumped platelets - ✔✔B. very high WBC count
✔✔The most appropriate screening test for detecting hemoglobin F is:
A. osmotic fragility
B. dithionite solubility
C. Kleihauer-Betke
D. heat instability test - ✔✔C. Kleihauer-Betke
✔✔The most approprite screening test for hemoglobin S is:
A. Kleihauer-Betke
B. dithionite solubility
C. osmotic fragility
D. sucrose hemolysis - ✔✔B. dithionite solubility
✔✔Hematology standards include:
A. stabilized red blood cell suspension
B. latex particles
C. stabilized avian red blood cells
D. certified cyanmethemoglobin solution - ✔✔D. certified cyanmethemoglobin solution
✔✔When using the turbidity (solubility) method for detecting the presence of
hemoglobin 2, an incorrect interpretation may be made when there is a(n):
A. concentration of less than 7g/dL ( 70 g/L) hemoglobin
B. glucose concentration greater than 150 mg/dL (8.3 mmol/L)
C. blood specimen greater than 2 hours old
D. increased hemoglobin - ✔✔D. increased emoglobin
✔✔The laboratory findings on a patient are as follows:
MCV: 55 um^3 (55 fL)
MCHC: 25%
MCH: 17 pg
A stained blood film of this patient would most likely reveal a red cell picture that is:
, A. microcytic, hypochromic
B. macrocytic, hypochromic
C. normocytic, normochromic
D. microcytic, normochromic - ✔✔A. microcytic, hypochromic
✔✔A patient has the following laboratory results:
RBC: 2.00 x 10^6/uL (2.00 x 10^12/L)
Hct: 24%
Hgb: 6.8 g/dL (68 g/L)
Reticulocytes: 0.8%
The mean corpuscular volume (MCV) of the patient is:
A. 35 um^3 (35 fL)
B. 83 um^3 (83 fL)
C. 120 um^3 (120 fL)
D. 150 um^3 (150 fL) - ✔✔C. 120 um^3 (120 fL)
✔✔A patient has a high cold agglutinin titer. Automated cell counter results reveal an
elevated MCV, MCH, MCHC. Individual erythrocytes appear normal on a stained smear,
but agglutinates are noted. The appropriate course of action would be to:
A. perform the RBC, Hgb, Hct determinations using manual methods
B. perform the RBC determination by a manual method; use the automated results for
the Hgb and Hct
C. repeat the determinations using a microsample of diluted blood
D. repeat the determinations using a prewarmed microsample of diluted blood - ✔✔D.
repeat the determinations using a prewarmed microsample of diluted blood
✔✔A blood sample from a patient with a high titer cold agglutinin, which of the following
results can occur in the presence of a cold agglutinin?
A. increased MCV and decreased RBC
B. increased MCV and normal RBC
C. decreased MCV and increased MCHC
D. decreased MCV and RBC - ✔✔D. MCV and RBC
✔✔In polycythemia vera, leukocyte alkaline phosphatase activity is:
A. elevated
B. normal
C. decreased - ✔✔A. elevated
✔✔Which of the following is the formula for mean corpuscle hemoglobin (MCH)?
A. Hct/(RBC x 1000)
