Who can donate plasma? Eligibility, explained

Requirements are set by the FDA and applied by every licensed center, with small variations.

The baseline

You generally need to be 18 or older, weigh at least 110 lb, be in good general health, and have a valid photo ID, proof of your Social Security number, and proof of a local address.

Your first visit takes longer

Expect two to three hours. It includes a medical history questionnaire, a short physical, and testing for protein and haematocrit levels. Later visits usually run 60 to 90 minutes.

Temporary deferrals

Recent tattoos or piercings, current antibiotics, pregnancy or recent childbirth, low iron, a cold or fever, or a recent whole-blood donation can all pause your eligibility. Most are measured in months, not years.

Longer-term deferrals

Some chronic conditions and certain medications prevent donation. Only the center's medical staff can tell you where you stand — call ahead rather than guessing.

Bring the right documents

The single most common wasted trip is a missing proof of address. A utility bill, bank letter or lease from the last 30 days usually satisfies it.