How Often Can You Donate Blood?

Whole Blood

You must wait a minimum of 56 days between whole blood donations. You must wait at least 72 hours after donating blood before you can donate platelets.

Platelets

You can donate platelets once in a seven day period and up to 24 times a year. You must wait at least 72 hours after donating platelets before donating whole blood.

In any eight (8) week period, you can make one blood donation and one platelet donation or six (6) platelet donations.