weight and age requiremtn donate blood
1. Basic Requirements for Blood Donation. 1  Must be at least 18 years of age or 16 or 17 with written parental or guardian consent. 2  Weigh at least 115 pounds for whole blood donations or 110 pounds for platelet and plasma donations.. Basic Requirements for Blood Donation. 1  Must be at least 18 years of age or 16 or 17 with written parental or guardian consent. 2  Weigh at least 115 pounds for whole blood donations or 110 pounds for platelet and plasma donations.