... Department of Internal Medicine, Division of Hematology, Ankara, Turkey Corresponding author: Songul Serefhanoglu, Hacettepe University Hospital, Department of Internal Medicine, Division of Hematology, ... anemia (IDA) remains the most common cause of anemia and affects about 5–12% of non-pregnant women and 1–5% of men have IDA [1-2]. It is a result of blood loss from the gastrointes-tinal tract ... The absence of stainable iron is the “gold standard”, for diagnosis of IDA. Marrow examination shows, in addition to the absence of hemosiderin iron, a decrease in the proportion of sideroblasts,...