Medicine Which laboratory determinations would be most helpful in distinguishing iron deficiency anemia from anemia of chronic disease? A Erythrocyte: granulocyte ratio in bone marrow B Presence or absence of polychromatophilic target cells C Presence or absence of stippled erythrocytes D Serum ferritin 💡 Explanation Which laboratory determinations would be most helpful in distinguishing iron deficiency anemia from anemia of chronic disease? ✓ Correct Answer: D. Serum ferritin