A patient had the following results:
RBC 2.45 x 1012/L
MCV 90 fL
Hb 7.5 g/dL
MCH 31 pg
Hct 22.0 %
MCHC 34 g/dL
DAT negative
Haptoglobin 10 mg/dL
(Reference range: 35-164 for males and 40-175 for females)
Which is the most appropriate reflex test?
a. Reticulocyte count
b. Hemoglobin electrophoresis
c. Osmotic fragility test
d. Erythropoietin assay
Correct Answer: A
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