Which of the following laboratory tests is used to diagnose and monitor the progression of sideroblastic anemia?

A Serum iron levels
B Serum ferritin levels
C Bone marrow biopsy
D Prussian blue stain ✓

Explanation

Prussian blue stain is used to detect the presence of ringed sideroblasts, which are characteristic of sideroblastic anemia.

Source

Williams Hematology
Hematology Hematology: Anemia Hematology: Anemia Hard MEDICAL Confidence: high