When anisocytosis is present, all the following are true except:
a. Variation in size of red cells should be observed on the blood film.
b. The RDW should be increased.
c. Variation in shape of red cells should be observed on the blood film.
d. Anemia is likely present.
ANS: C
Poikilocytosis refers to a variation in the shape of red cells. Anisocytosis refers to variation in size; when this is present, the RDW should be increased and the patient is most likely anemic.
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