Yes, if you are donating whole blood. There is no waiting period from the time that you took the aspirin.
If you are donating platelets, please do not take aspirin 48 hours prior or any non-steroidal anti-inflammatory drugs (NSAIDs) 12 hours prior to your scheduled donation time. Tylenol is acceptable as it is not a non-steroidal anti-inflammatory drug (NSAID).
Posted in: Donate Blood