How Plasma Donation Works
What is plasma?
Plasma is the liquid component of your blood — it makes up about 55% of your blood volume and contains water, proteins, antibodies, clotting factors, and enzymes. It's used to create life-saving medications for patients with hemophilia, immune disorders, and other serious conditions.
The donation process
Plasma donation (plasmapheresis) works differently from whole blood donation. Here's what to expect:
- Registration and screening — First-time donors complete a detailed health questionnaire and physical examination. Returning donors complete a shorter screening.
- Vital check — Staff measure your blood pressure, pulse, temperature, and hematocrit (iron level). Your protein levels are checked via a small finger prick.
- The donation itself — Blood is drawn from your arm, processed through an apheresis machine that separates plasma from the rest of your blood, and the red cells are returned to you. This takes 45–90 minutes.
- Recovery — You'll have a brief observation period before you can leave.
How often can you donate?
FDA regulations allow plasma donation up to twice in any 7-day period, with at least 2 days between donations. Most donors who donate regularly donate 2x per week to maximize their earnings.
What do centers pay?
Payment varies by center, weight, and current promotions. New donor bonuses can range from $100 to over $1,000 for your first 8 donations. Regular donations typically pay $20–$100 per visit depending on the center and your weight bracket.