To donate plasma in the United States, you must weigh at least 110 pounds, be in generally good health, and pass a screening that checks your vital signs and protein levels. Beyond those basics, you’ll also need specific documents, and certain medications, travel history, or medical conditions can delay or prevent you from donating. Here’s what to expect.
Age, Weight, and General Health
The FDA requires all plasma donors to weigh at least 110 pounds on the day of donation. Most plasma centers accept donors between the ages of 18 and 69, though the exact cutoffs vary by location. You need to be feeling well on the day you show up. Active infections, fevers, or any acute illness will get you turned away until you’ve recovered.
What to Bring to Your First Visit
Your first appointment takes longer than future visits because the center needs to verify your identity and build a donor profile. According to the U.S. Department of Health and Human Services, you’ll need three things:
- A government-issued photo ID (driver’s license, passport, or state ID)
- Proof of address such as a driver’s license or a recent utility bill
- Proof of your Social Security number such as a Social Security card, W-2 form, or paystub. The name on this document must match your ID exactly.
If any of your documents have mismatched names (for example, a maiden name on one form), sort that out before your appointment to avoid a wasted trip.
The Medical Screening
Every time you donate, the center checks your vital signs: blood pressure, pulse, and temperature. They also test a small blood sample for protein and hemoglobin levels. Hemoglobin minimums typically fall around 12.5 g/dL for women and 13.5 g/dL for men, which ensures your body can handle the temporary fluid loss. If your readings fall outside acceptable ranges on a given day, you’ll be deferred until they normalize.
On your first visit, you’ll also complete a detailed health history questionnaire and have a brief physical exam. This covers everything from past surgeries to current medications to sexual health history. The questions can feel invasive, but they exist to protect both you and the people who will eventually receive plasma-derived therapies.
Medications That Delay Donation
Most common medications, including birth control, antidepressants, and over-the-counter pain relievers like ibuprofen, won’t disqualify you. But several categories will trigger a waiting period. Never stop taking a prescribed medication just to become eligible to donate.
The most common temporary deferrals include:
- Isotretinoin (severe acne treatment): 1 month after your last dose
- Blood thinners like warfarin or heparin: 7 days
- Anti-platelet medications for stroke or heart attack prevention: anywhere from 2 days to 1 month depending on the specific drug
- Finasteride for hair loss: 1 month
- Finasteride or dutasteride for prostate symptoms: 6 months
- Oral HIV prevention (PrEP or PEP): 3 months after stopping
- Injectable HIV prevention: 2 years
- Psoriasis medications like acitretin: 3 years
HIV treatment (antiretroviral therapy) results in a permanent deferral. So does participation in certain experimental drug trials. If you take any prescription medication, bring the name and dosage with you so the screening staff can check it against the current deferral list.
Conditions That Disqualify You
HIV infection is a permanent disqualification regardless of treatment status or viral load. Hepatitis B and C infections also typically result in permanent deferral. Most centers permanently defer anyone who has ever tested positive for these bloodborne infections.
Temporary deferrals apply to a range of situations. A recent cold or flu will sideline you for a few days. If you’ve been exposed to hepatitis B and received immunoglobulin treatment, the waiting period is 3 months. Cancer history, autoimmune conditions, and bleeding disorders are evaluated on a case-by-case basis. The screening staff will walk through your medical history and let you know where you stand.
Tattoos, Piercings, and Travel
A recent tattoo or piercing can delay your eligibility. If you got a tattoo in a state that doesn’t regulate tattoo facilities, you’ll wait 3 months. The same 3-month deferral applies to piercings done with a reusable gun or any reusable instrument. Tattoos from regulated, licensed facilities in states with oversight are generally fine with no waiting period.
Travel to certain parts of the world triggers deferrals as well. If you’ve visited a region where malaria is common, you can’t donate for 3 months after returning. Former residents of those areas face a 3-year wait. Anyone who has actually been diagnosed and treated for malaria must wait 3 years after treatment and remain symptom-free during that time. The CDC and FDA maintain updated lists of which countries are affected, so check before your appointment if you’ve traveled internationally.
How to Prepare Before Your Appointment
Donating plasma removes roughly 800 milliliters (about 32 ounces) of fluid from your body. The HHS recommends drinking at least that much water in the 2 to 3 hours before your appointment to help offset the loss. Dehydration makes your veins harder to access and can leave you feeling lightheaded afterward.
In the days leading up to your donation, eat a diet rich in protein and iron. Think lean meats, eggs, beans, spinach, and fortified cereals. Limit alcohol and caffeine, both of which can dehydrate you. On the day of your appointment, avoid nicotine for at least an hour beforehand. A solid meal a few hours before you sit in the chair makes a real difference in how you feel during and after the process.
Compensation and What to Expect
Unlike whole blood donation, plasma donation at commercial centers is compensated. Rates vary by location, but CSL Plasma, one of the largest chains, advertises up to $100 for a first donation and up to $750 in a donor’s first month. New donor promotions tend to pay significantly more than the ongoing rate for returning donors. Payment is typically loaded onto a prepaid debit card after your first visit.
Your first appointment will take around 2 to 3 hours because of the extra paperwork, physical, and screening. Subsequent visits usually run 60 to 90 minutes. Most centers allow you to donate twice per week with at least one day between visits. The actual collection process uses a machine that draws your blood, separates the plasma, and returns the red blood cells and other components back to you along with saline.