ASCP HEMATOLOGY LABORATORY
TESTING EXAMINATION TEST COMPLETE
QUESTIONS AND ANSWERS FULL
SOLUTION VERIFIED
●● A 40-year old man had an erythrocyte count of 2.5 X10(6)/uL,
hematocrit of 22% and a reticulocyte count of 2.0%. what is the patient's
absolute reticulocyte count?
A. 5.0 x 10(3)/uL (5.0 x 10(9)/L)
B. 50.0 x 10(3)/uL (50.0 x 10(9)/L)
C. 500 x 10(3)/uL (500 x 10(9)/L)
D. 5000 x 10(3)/uL (5000 x 10(9)/L)
Answer: B. 50.0 x 10(3)/uL (50.0 x 10(9)/L)
●● The mean value of a reticulocyte count on specimens of cord blood
from helathy, full-term newborns is approximetely:
A. 0.5%
B 2.0%
C. 5.0%
D. 8.0%
Answer: C. 5.0% Newborns have elevated retic counts
,●● A patient has a high cold agglutinin titer. Automated hematology
analyzer results reveal an elevated MCV, MCH and MCHC as well as a
decreased RBC. 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, and Hct determinations using manual
methods.
B. perform the RBC determination by a manual method; us 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
Answer: D. Repeat the determinations using a prewarmed microsample
of diluted blood
●● Supravital staining is important for reticulocytes sice the cells must
be living in order to stain the:
A. Remaining RNA in the cell
B. Iron before it precipitates
C. Cell membrane before it dries out
D. Denatured hemoglobin in the cell
Answer: A. Remaining RNA in the cell. Using supravital stain, residual
ribosomal RNA is precipitated within the reticulocytes
●● Which of the following is used for staining reticulocytes?
, A. Giemsa stain
B. Wright stain
C. New Methylene blue
D. Prussian Blue
Answer: C. New Methylene blue
●● Which of the following values is calculated form the red blood cell
indices in an automated hematology analyzer?
A. Red blood cell count (RBC)
B. Hematocrit
C. Mean corpuscular volume (MCV)
D. Red cell distribution width (RDW)
Answer: B. Hematocrit. The calculated RBC parameters include the
hematocrit, derived from the MCV and RBC, MCH (mean corpuscular
hemoglobin) which is calculated from the hemoglobin concentration and
the RBC and the MCHC, which is determined form the hemoglobin
value and the hematocrit
●● A hematology analyzer counts red blood cells by which method?
A. Impedence
B. Chromogenic
C. Photometric
D. Turbidimetric
TESTING EXAMINATION TEST COMPLETE
QUESTIONS AND ANSWERS FULL
SOLUTION VERIFIED
●● A 40-year old man had an erythrocyte count of 2.5 X10(6)/uL,
hematocrit of 22% and a reticulocyte count of 2.0%. what is the patient's
absolute reticulocyte count?
A. 5.0 x 10(3)/uL (5.0 x 10(9)/L)
B. 50.0 x 10(3)/uL (50.0 x 10(9)/L)
C. 500 x 10(3)/uL (500 x 10(9)/L)
D. 5000 x 10(3)/uL (5000 x 10(9)/L)
Answer: B. 50.0 x 10(3)/uL (50.0 x 10(9)/L)
●● The mean value of a reticulocyte count on specimens of cord blood
from helathy, full-term newborns is approximetely:
A. 0.5%
B 2.0%
C. 5.0%
D. 8.0%
Answer: C. 5.0% Newborns have elevated retic counts
,●● A patient has a high cold agglutinin titer. Automated hematology
analyzer results reveal an elevated MCV, MCH and MCHC as well as a
decreased RBC. 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, and Hct determinations using manual
methods.
B. perform the RBC determination by a manual method; us 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
Answer: D. Repeat the determinations using a prewarmed microsample
of diluted blood
●● Supravital staining is important for reticulocytes sice the cells must
be living in order to stain the:
A. Remaining RNA in the cell
B. Iron before it precipitates
C. Cell membrane before it dries out
D. Denatured hemoglobin in the cell
Answer: A. Remaining RNA in the cell. Using supravital stain, residual
ribosomal RNA is precipitated within the reticulocytes
●● Which of the following is used for staining reticulocytes?
, A. Giemsa stain
B. Wright stain
C. New Methylene blue
D. Prussian Blue
Answer: C. New Methylene blue
●● Which of the following values is calculated form the red blood cell
indices in an automated hematology analyzer?
A. Red blood cell count (RBC)
B. Hematocrit
C. Mean corpuscular volume (MCV)
D. Red cell distribution width (RDW)
Answer: B. Hematocrit. The calculated RBC parameters include the
hematocrit, derived from the MCV and RBC, MCH (mean corpuscular
hemoglobin) which is calculated from the hemoglobin concentration and
the RBC and the MCHC, which is determined form the hemoglobin
value and the hematocrit
●● A hematology analyzer counts red blood cells by which method?
A. Impedence
B. Chromogenic
C. Photometric
D. Turbidimetric
