Roughly 1 pint is given during a donation. A healthy donor may donate red blood cells every 56 days, or double red cells every 112 days. A healthy donor may donate platelets as few as 7 days apart, but a maximum of 24 times a year.
A Power Red donation allows you to safely donate two units of red blood cells during one donation.
How long will it take to replenish the pint of blood I donate? Your body will replace the blood volume (plasma) within 48 hours. It will take four to eight weeks for your body to completely replace the red blood cells you donated.
A+ is a common blood type which makes it the most needed blood for transfusions, so you may be asked to donate whole blood. Whole blood donors are eligible to give blood every 8 weeks. Platelets are another way to maximize your donation as an A+ blood type.