Clinical Donation Intervals: Whole Blood, Double Red, and Platelets
Different types of blood donations harvest different components, requiring unique recovery intervals to protect donor health. A whole blood donation removes about one pint of blood, including red cells, white cells, platelets, and plasma. The standard minimum waiting interval between whole blood donations is 56 days (8 weeks) for both men and women in the US.
Double Red Cell (Power Red) donations use an apheresis machine to collect two units of red blood cells while returning plasma and platelets to the donor. Because double the red cells are removed, the required waiting interval is doubled to 112 days (16 weeks). Platelet donations, which collect only clotting cells, can be performed every 7 days (up to 24 times a year), while source plasma donations require a 28-day waiting period.