Question

what is the gold standard test to diagnose iron deficiency?
a) biopsy
b) serum ferritin
c) tibc
d) serum iron

Explanation:

Serum ferritin is considered the gold - standard test for diagnosing iron deficiency as it reflects the body's iron stores. A low serum ferritin level is indicative of iron deficiency. Biopsy is not typically used for diagnosing iron deficiency. Total iron - binding capacity (TIBC) and serum iron are also used in the work - up but are not the gold - standard.

Answer:

B. Serum ferritin