what condition would prevent you from giving blood
1 Potential blood donors may be temporarily prevented from donating if they have a low level of iron (hematocrit) in their blood. 2  This requirement is for the safety of the donor in order to ensure that their blood iron level remains within the normal range for a healthy adult.
You may NOT donate blood. Hemophilia or related clotting disorder. You may NOT donate blood. Hereditary Spherocytosis. You may NOT donate blood. Histoplasmosis. You may donate if your x-ray shows inactive disease. HIV. You may not NOT donate blood.