A blood donation of 475 mL could deplete 242 ± 17 mg of iron from blood donors. The objective of this report is to evaluate if blood donors could develop sideropenia without anemia after several donations. Serum levels of ferritin were measured in 528 male blood donors, with ages ranging from 18 to 61 years old. A total of 313 of them had made 4 or more donations and 215 of them were first time donors. They donated blood in the Hemocentro do Amazonas - Hemoam, from September 2001 to June 2002. Deletion of iron stores characterized by serum ferritin levels of less than 20 ng/L was found in 7.4% (16/215) of first time donors, and in 48.6% (152/313) of multiple donors. With more stringent criteria of ferritin values less than 12 ng/L, 3.7% (8/215) of first-time donors as opposed to 24.9% (78/313) of multiple donors showed severe depletions. We concluded that multiple donors, after more than 5 repeated donations, are at risk of depleted iron and ferritin levels. It is important to implant protocols of iron supplementation for these donors to avoid damage to their health and consequent loss in quality and quantity in the collected blood.
Blood donors; sideropenia; Iron deficiency; multiple donors; ferritin
