A patient with moderate anemia has an elevated MCV and hypersegmented neutrophils. Which of the following should be ordered first?
a. Schilling test
b. Gastric analysis
c. Antibodies to IF
d. Vitamin B12 and folate assays
ANS: D
The blood picture findings point to a megaloblastic anemia. The first test to order would be the vitamin B12 and folate assays to determine which of these two vitamins is deficient.
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