Plasma donation disqualifications fall into two categories: permanent and temporary. Some conditions, like HIV, hepatitis B or C, and certain blood disorders, will disqualify you for life. Others, like a recent tattoo, pregnancy, or cold, only require a waiting period before you can try again. Most people who get turned away at a plasma center are dealing with a temporary deferral, not a permanent one.
Basic Eligibility Requirements
Before anything else, you need to meet the baseline criteria. You must be at least 18 years old and weigh at least 110 pounds. Falling below that weight threshold is an automatic disqualification because removing plasma from a smaller body puts too much strain on your system.
You can donate plasma up to twice in a seven-day period, with at least two days between each session. If you show up too soon after your last donation, you’ll be turned away regardless of your health status.
What They Check at the Center
Every visit starts with a mini physical. Staff will check your vital signs, including blood pressure, pulse, and temperature, along with a finger-stick blood test. That blood test measures two things that can send you home: hemoglobin and total protein levels.
For men, the minimum hemoglobin is 13.0 g/dL (or a hematocrit of 39%). For women, it’s 12.5 g/dL (or a hematocrit of 36%), though some centers can accept women as low as 12.0 g/dL under special protocols approved by the FDA. If your levels are too low, it typically means you’re not getting enough iron in your diet. This is one of the most common reasons for temporary deferral, especially among frequent donors. You can usually come back once your levels recover.
Permanent Disqualifications
Certain medical conditions disqualify you from donating plasma permanently. The list is long, but the major categories are blood disorders, chronic organ disease, and specific infections.
Blood and clotting disorders that result in permanent deferral include hemophilia, sickle cell disease, thalassemia major, polycythemia, thrombophilia, and most coagulation factor deficiencies (with the exception of Factor XII deficiency). Conditions that destroy red blood cells, like spherocytosis and paroxysmal nocturnal hemoglobinuria, are also permanently disqualifying.
Chronic kidney disease in any form is a permanent deferral. That includes glomerulonephritis, chronic nephritis, chronic pyelonephritis, and anyone who has ever been on dialysis. Cirrhosis of the liver is also a permanent disqualification.
Other permanently disqualifying conditions include ALS, Kaposi’s sarcoma, hemochromatosis, Buerger’s disease, chronic fatigue syndrome (when formally diagnosed), and chronic granulomatosis. Jaundice tied to hepatitis B or C, or jaundice with no known cause, will also disqualify you permanently.
Anyone who has received human pituitary-derived growth hormone or bovine insulin is permanently or indefinitely deferred, as is anyone who has undergone xenotransplantation (receiving an organ or tissue from an animal).
Medications That Delay or Prevent Donation
Several medications require a waiting period after your last dose. The acne drug isotretinoin (sold under brand names like Accutane, Claravis, and Absorica) carries a one-month deferral. Finasteride (Proscar, Propecia), used for hair loss and prostate issues, also requires a one-month wait.
Dutasteride (Avodart, Jalyn) has a longer deferral of six months. The psoriasis medication acitretin (Soriatane) requires a three-year wait. Its older predecessor, etretinate (Tegison), is a permanent deferral because the drug stays in body fat for years.
If you’ve received hepatitis B immune globulin, you’ll need to wait 12 months. Anyone taking an experimental medication or who has received an unlicensed vaccine is typically deferred for one year. Blood thinners won’t necessarily disqualify you from donating plasma, but they can prevent you from donating platelets.
Pregnancy and Postpartum
You cannot donate plasma while pregnant. After giving birth, the standard recommendation is to wait at least six months. Some centers extend that deferral until you’ve completely finished breastfeeding, since the nutritional demands of nursing overlap with the protein loss from plasma donation. The same six-month waiting period generally applies after a miscarriage.
Tattoos, Piercings, and Body Modifications
A tattoo done at a licensed, state-inspected parlor using sterile technique requires no waiting period at all. The same goes for ear and body piercings performed with sterile, single-use equipment like a piercing gun.
The three-month deferral kicks in when sterile conditions aren’t guaranteed. That means tattoos that were self-applied, done at an unlicensed shop, or applied outside the country. Self-piercings and piercings done without sterile single-use equipment also carry a three-month wait. Body branding requires a three-month deferral regardless of where it was done.
Travel to Malaria-Risk Areas
If you’ve traveled to a country where malaria is present and spent more than 24 hours there, you’ll be deferred for one year from the date you left. If you’ve lived in a malaria-endemic country for more than five years, the deferral jumps to three years after you leave. A previous malaria diagnosis or positive malaria test also carries a three-year deferral.
The CDC maintains the official list of malaria-endemic areas, and plasma centers reference it during screening. Even a brief layover of more than 24 hours in a qualifying country counts as travel.
HIV Risk Screening
The FDA updated its donor screening approach in recent years, moving away from blanket deferrals for specific groups and toward individual risk-based questions. The current guidelines apply to all donors equally, regardless of sexual orientation. Screening questions focus on recent behaviors that increase HIV transmission risk, such as having a new sexual partner who has HIV or exchanging sex for money or drugs. These guidelines apply to source plasma collection as well as whole blood donation.
Temporary Illness and Recent Surgery
If you’re currently sick with a cold, flu, COVID-19, or any active infection, you’ll be turned away until you’ve fully recovered. There’s no fixed number of days for most common illnesses. The standard is simply feeling well, being symptom-free, and passing the vitals check at the center.
Recent surgeries also result in temporary deferrals, though the length depends on the type and complexity of the procedure. Minor outpatient procedures may only require a short wait, while major surgery could mean a deferral of weeks or months. The center’s medical staff will evaluate your specific situation during screening.