Multiple myeloma involves a comprehensive approach that combines blood tests, imaging, and bone marrow studies. Learn about ...

Sideroblastic anemia is a rare form of anemia in which the bone marrow does not use iron properly to form healthy red blood cells. The condition may lead to fatigue and other symptoms.

Now, bone marrow is treated as if it were blood or plasma. Over 20 million people donate plasma annually and get paid $50 to $75 per appointment.

Diagnosis also required -- and still does -- the presence of at least 10% infiltration of clonal plasma cells on bone marrow examination or a biopsy-proven bony or extramedullary plasmacytoma.