Question

which of the following test is a functional test for b12 deficiency?
a) schilling test
b) serum cobalamin test
c) monospot
d) hypersegmented neutrophil test
e) methylmalonic acid test

Explanation:

The Schilling test is used to assess the body's ability to absorb vitamin B12, which makes it a functional test. The Serum Cobalamin test measures the level of B12 in the blood (a quantity test, not functional). The Monospot test is for mononucleosis. The Hypersegmented Neutrophil test is a morphological observation in blood cells related to B12 deficiency but not a functional test of B12 absorption/usage. The Methylmalonic acid test is more about a metabolite related to B12 - dependent pathways but not a direct functional test of B12 absorption like the Schilling test.

Answer:

A. Schilling test