Can I donate blood?

Eligibility FAQ

What are the basic requirements to donate blood?

In the United States you generally must be at least 16–17 years old (with parental consent where required), weigh at least 110 lbs (50 kg), and be in good general health. A short health screening at the center confirms your eligibility each time.

How often can I donate blood?

You can donate whole blood every 56 days, Power Red (double red cells) every 112 days, platelets every 7 days (up to 24 times a year), and plasma every 28 days at volunteer centers. Commercial plasma centers allow more frequent donation.

Can I donate if I have a tattoo?

Usually yes. In states that regulate tattoo and piercing facilities there's no waiting period; elsewhere you may need to wait up to 3 months. The center will check based on where and when you got it.

Can I donate if I'm taking medication?

Many medications are fine. Some require a waiting period or a temporary deferral, such as antibiotics for an active infection. Bring a list of your medications and the center will advise.

Does this tool decide if I can donate?

No. It gives general guidance based on common requirements. The final decision is always made by a trained screener at the donation center, and rules vary by center and country.