How long do you have to wait to come back if you get a piercing and tattoo? Is it 6 or 12 months? Or over a year?

I think it's a year if you have to tell them

To find out if you are eligible to donate plasma, please contact your local plasma donation center. Donor safety is a priority at Grifols plasma donor centers. Our centers follow strict federal and international regulations and procedures to determine if plasma donation is safe for both you and the patients receiving products created from your plasma. You can locate your nearest center here: https://www.grifolsplasma.com/en/web/plasma/locations/find-a-donation-center

12 months plus