Question

what is the gold standard test for b12 deficiency?
a) hypersegmented neutrophils
b) coombs test
c) d - xylose
d) methylmalonic acid
e) schilling test

Explanation:

The Schilling Test is specifically designed to assess the body's ability to absorb vitamin B12. Hypersegmented neutrophils are a sign (not a test) often seen in B12 deficiency. The Coombs Test is for autoimmune hemolytic anemia. D - xylose test is for small - intestine absorption (not specific to B12). Methylmalonic acid levels can be elevated in B12 deficiency but it's a biomarker, not a test to assess B12 absorption like the Schilling Test.

Answer:

e) Schilling Test