Physiology All of the following statements concerning iron deficiency are true, EXCEPT: A It is the most common cause of anemia in infants and premenopausal women B RBC indices do not change until storage iron is depleted C Serum ferritin is directly propoional to body iron stores in normal subjects D Normal serum ferritin rules out the diagnosis of iron deficiency 💡 Explanation All of the following statements concerning iron deficiency are true, EXCEPT: ✓ Correct Answer: C. Serum ferritin is directly propoional to body iron stores in normal subjects