How often can a person donate blood in a year and what is the age requirement?”
http://www.givelife2.org/sponsor/quickfacts.asp Facts about eligibility —You must be at least 17 years old, weigh more than 110 pounds, and be in good general health to donate (note: eligibility requirements may vary in some states and blood centers) —A healthy donor may donate red blood cells every 56 days —A healthy donor may donate platelets as few as 3 days apart, but a maximum of 24 times a year Guidelines will vary with location and agency.
