To give plasma, you need to be at least 18 years old, weigh at least 110 pounds, and be in generally good health. You’ll also need valid identification, proof of your address, and your Social Security number. Beyond those basics, there’s a medical screening, dietary prep, and a list of medications and conditions that can temporarily or permanently disqualify you. Here’s what to expect at every step.
Basic Eligibility Requirements
The core requirements are straightforward. You must be 18 or older, weigh at least 110 pounds, and pass a medical exam that includes testing negative for hepatitis and HIV. These rules apply broadly across donation centers, though individual facilities may have additional criteria.
Before your first donation, the center will do a finger-stick blood test to check your hemoglobin and hematocrit levels, which measure your blood’s ability to carry oxygen. Women need a hemoglobin of at least 12.5 g/dL (or a hematocrit of 36%), and men need at least 13.0 g/dL (or 39%). If your levels fall below those thresholds, you’ll be turned away that day but can try again later.
What to Bring With You
First-time donors typically need three things: a valid photo ID (driver’s license or passport), proof of current address (a utility bill, bank statement, or piece of mail works), and your Social Security number or card. Some centers accept a combination of documents, so check with your specific facility before you go. Returning donors usually just need their ID or a donor card issued by the center.
Medications That Can Disqualify You
Certain medications create temporary waiting periods, while others disqualify you permanently. The reason varies: some drugs affect clotting and make the donation unsafe for you, while others could harm whoever receives your plasma.
Blood thinners like warfarin require a 7-day wait after your last dose. Common antiplatelet medications used to prevent strokes or heart attacks carry wait times ranging from 2 to 14 days depending on the specific drug. If you take isotretinoin for acne (sometimes known by the brand name Accutane), you’ll need to wait one month after stopping.
Longer deferrals apply to finasteride for hair loss or prostate symptoms (6 months), certain rheumatoid arthritis drugs (6 months to 2 years), and oral HIV prevention medications like PrEP (3 months). Injectable PrEP requires a 2-year wait. Anyone currently taking HIV treatment medication is permanently ineligible, as is anyone on an experimental drug.
This isn’t an exhaustive list. The center will review your full medication history during screening, so bring a list of everything you take.
Tattoos, Piercings, and Other Temporary Deferrals
If you got a tattoo in a state that doesn’t regulate tattoo facilities, you’ll need to wait three months. The same three-month wait applies to piercings done with a reusable gun or any reusable instrument. Tattoos and piercings done at regulated, licensed shops using single-use equipment generally don’t trigger a deferral, but if there’s any doubt about whether the tools were single-use, the three-month wait applies.
How to Prepare in the Days Before
What you eat and drink in the days leading up to your appointment directly affects whether you pass the screening and how you feel afterward. Focus on protein-rich and iron-rich foods: lean meats, eggs, beans, spinach, and fortified cereals all help keep your protein and hemoglobin levels where they need to be. Cut back on alcohol and caffeine in the days before your visit.
Hydration matters more than most people expect. The HHS recommends drinking about 32 ounces of water two to three hours before your appointment to help offset the loss of blood volume during donation. That’s roughly four standard glasses. Avoid nicotine within an hour of your appointment, as it can constrict blood vessels and slow the process.
What Happens During Donation
The process, called plasmapheresis, uses a machine to draw your blood, separate out the liquid plasma, and return your red blood cells and other components back to your body through the same needle. Because your blood cells are returned, plasma donation is less taxing on your body than whole blood donation, and you’re allowed to donate more frequently (typically twice per week with at least 48 hours between visits).
A single session takes roughly one to two hours, though your first visit will be longer because of the initial medical exam and paperwork. You’ll sit in a reclining chair with a needle in one arm for most of that time. Most centers offer Wi-Fi and encourage you to bring a phone, book, or laptop.
Side Effects to Expect
Most side effects are mild. Lightheadedness and bruising at the needle site are the most common, and they tend to happen more often in first-time donors, younger adults, and people with lower body weight. You may feel more fatigued than usual the day after donating.
The machine uses a substance called citrate to keep your blood from clotting during the process. A small amount of citrate can enter your bloodstream and temporarily lower your calcium levels, causing tingling in your fingers or toes or mild chills. Most people don’t notice this at all, and for those who do, it typically passes quickly. Eating a calcium-rich snack beforehand (yogurt, cheese, milk) can help.
After You Donate
Keep your bandage on for at least four hours. Avoid alcohol until the next day, and don’t smoke for at least an hour. Skip strenuous exercise and heavy lifting with your donation arm for 48 to 72 hours. Drink plenty of water and eat a solid meal soon after your visit. If you feel faint or lightheaded after leaving, sit or lie down immediately and avoid driving for at least six hours.
How Much You’ll Get Paid
Unlike whole blood donation at places like the Red Cross, plasma donation at commercial centers is compensated. Typical payments range from $30 to $70 per visit, though some centers pay $100 or more as of mid-2025. First-time donors often receive significantly higher bonuses. CSL Plasma offers up to $700 during your first month. BioLife advertises up to $750 for new donors at select locations. Octapharma offers elevated rates during your first 35 days.
With regular donations and incentive programs, experienced donors can earn $400 or more per month. High-frequency donors at some centers report making up to $1,000 monthly. Payment is usually loaded onto a prepaid debit card after each visit.