To donate plasma, a person generally must meet the following criteria:

• Be between 17 or 18 and 65 to 74 years old, depending on the center and country. Some places allow donors up to 74 years old if they are in good health, while others limit starting age to 65

• Weigh at least 50 kilograms (110 pounds)

• Be in good overall health and feel well on the day of donation

• Have suitable veins for plasma collection and a normal pulse

• Pass a medical screening including testing negative for infectious diseases such as HIV, hepatitis B and C

• Have no recent tattoos or piercings (usually within the last 4 months)

• Not have certain medical conditions such as cancer, heart conditions, organ transplants, hepatitis carriers, or have injected non-prescribed drugs

• Not be pregnant or have given birth within the last 6 months

• Meet other eligibility criteria discussed during screening, which may include travel history and lifestyle factors

Some centers require donors to have donated blood or platelets before if over a certain age (e.g., over 65)

. The donation process typically takes up to 90 minutes

. In summary, plasma donors are healthy adults typically aged 18-65 (sometimes up to 74), weighing at least 110 pounds, with no disqualifying medical conditions or recent risky behaviors, and who pass a medical screening