What Can You Donate From Your Body for Money?

Plasma is by far the most common body material people sell for cash in the United States, but it is not the only option. Sperm, eggs, stool, breast milk, hair, and even participation in clinical drug trials all come with compensation, though the amounts, time commitments, and physical costs vary enormously. The legal landscape matters too: selling a kidney will land you in federal trouble, while selling plasma twice a week is a regulated industry worth billions. The line between what you can and cannot monetize from your own body is drawn by a patchwork of federal law, ethical norms, and market demand.

Blood Plasma

Plasma donation is the gateway body-for-money transaction. In the U.S., for-profit plasma collection centers pay donors (the industry prefers “compensated donors”) anywhere from about $30 to $75 per visit, sometimes more for new donors or during promotional periods. You can legally donate up to twice per week with at least 48 hours between visits, adding up to over 100 donations per year. The process itself takes roughly 90 minutes: blood is drawn, the plasma is separated out by a machine, and the remaining blood components are returned to your body.

The health question around frequent plasma donation is real and increasingly studied. A large self-reported study of U.S. source plasma donors found that donating at the frequencies the FDA permits was broadly consistent with maintaining donor health.¹ But that study relied on donors reporting how they felt, and the picture gets more nuanced when you look at lab values. A randomized controlled trial comparing high-frequency donors to regular-frequency donors found that total serum protein dropped by about 9% and immunoglobulin G (an important antibody) fell by roughly 28% in the high-frequency group over 16 weeks. Even four weeks after the donors stopped, those protein levels had not fully recovered.²

A separate review found that as the number of donations climbed, both protein and ferritin (an iron-storage marker) dropped significantly, though hemoglobin levels remained stable.³ A large multicenter study from China echoed these findings: donors giving more than 16 times a year had measurably lower antibody levels than first-time donors, leading researchers to recommend routine IgG screening for frequent plasma donors.⁴ In practical terms, if you donate plasma regularly, you are slowly depleting some of the proteins your immune system needs. Whether that translates into getting sick more often is still being studied, but the biochemical direction is clear.

A longstanding concern about paid blood and plasma donations is safety of the supply. An analysis of published data sets on infectious disease markers among paid versus unpaid donors found no evidence that the gap in infection risk between the two groups had narrowed over time.⁵ This is one reason most countries that collect whole blood for transfusion rely on volunteer donors, while the U.S. remains the world’s dominant source of paid plasma, which undergoes additional manufacturing steps before use.

Sperm and Egg Donation

Sperm donation is relatively low-effort and modestly compensated. Banks typically pay between $50 and $125 per acceptable sample, with donors committing to visits one to three times per week over several months. Screening is strict: most banks accept fewer than 5% of applicants after evaluating medical history, genetic testing, and semen quality. The physical risks are minimal.

Egg donation is a different proposition entirely. Compensation in the U.S. commonly ranges from $5,000 to $10,000 per cycle, sometimes higher for repeat donors or those with specific traits. But the process involves weeks of hormone injections to stimulate the ovaries, followed by a surgical egg retrieval under sedation. A study of egg donors across multiple programs found that only about 38% were fully aware of all the procedures and medical risks involved. The knowledge gap was sharpest around long-term health risks: over half of the donors said they had not been informed about long-term risks at all, and many were also unaware of short-term risks like infection, bleeding after retrieval, and anesthesia complications.⁶ Every donor in that study knew about ovarian hyperstimulation syndrome, a painful and sometimes dangerous swelling of the ovaries, but awareness of other risks was patchy. First-time donors were the least informed.

The pay-per-risk calculus here is stark. Sperm donors face almost no physical risk for modest pay. Egg donors undergo a medically invasive process for substantially more money, but the informed-consent process does not always close the information gap, especially for donors traveling internationally to donate through fertility tourism programs.

Stool Donations

Fecal microbiota transplantation, where a healthy person’s stool is processed and given to a patient with a stubborn gut infection, has created a small but real market for stool donors. In the U.S., stool banks have offered up to about $40 per donation, while some research centers have paid around $46 per sample.⁷ In Europe, compensation has ranged from roughly €10 to €50 per donation, plus travel expenses in some trials.⁸

The catch is that getting accepted is surprisingly difficult. Screening involves extensive blood work, stool testing, and a detailed medical and lifestyle questionnaire. One screening program found that only about 48% of potential donors made it through, and the cost of finding a single qualified donor ran over $2,000.⁹ The screening is not a one-time hurdle either: donors are re-tested regularly, and factors like antibiotic use, travel to certain regions, or changes in diet can disqualify you temporarily or permanently. If you pass, though, the actual donation process is about as low-risk as it gets.

Clinical Trials

Participating in a clinical trial is not technically selling a body part, but it is renting out your body for medical testing, and the compensation can be substantial. Phase 1 trials, which test new drugs in healthy volunteers for the first time, tend to pay the most because they require the most time and carry the most uncertainty. Inpatient studies where you stay at a research facility for days or weeks can pay several thousand dollars.

When researchers asked healthy trial volunteers what they thought payment should be based on, about 90% pointed to the practical burden: the number of procedures, visits, time spent, and general inconvenience. Around 65% also mentioned the medical risks and potential side effects.¹⁰ Volunteers, in other words, think of themselves as being compensated for their time and discomfort, not for providing their body to science.

The ethics of trial compensation are contested. There is a tension between keeping payments low enough to avoid pressuring people into risky studies and keeping them high enough to avoid systematically recruiting only those who need the money most. One analysis argued that deliberately suppressing payments could effectively target lower-income adults for phase 1 studies, raising justice concerns even as it supposedly protects against “undue influence.”¹¹ In practice, early-phase trial participants skew younger and lower-income, and some people treat it as a form of gig work, cycling through studies at different research sites.

Stem Cells and Bone Marrow

Donating bone marrow or stem cells sits in a legally unusual space. The National Organ Transplant Act of 1984 made it a federal crime to buy or sell human organs, and for years bone marrow was treated as falling under that ban. But modern collection methods changed the legal picture. Most “bone marrow donations” today are actually peripheral blood stem cell collections: the donor takes medication for a few days that pushes stem cells into the bloodstream, then sits through an apheresis procedure much like a plasma donation. A federal appeals court ruled that because this method does not remove any of the soft tissue from inside bones, peripheral blood stem cells collected through apheresis are not “bone marrow” under the law and therefore can be legally compensated.¹²

The court’s reasoning was straightforward: if stem cells in peripheral blood counted as bone marrow, then ordinary blood donors would be criminals too, since all blood cells originate in the marrow. The practical result is that organizations can now offer compensation for stem cell donations collected by apheresis but not for traditional aspiration donations, where a needle is inserted into the hip bone. The traditional method, which is less common now, remains covered by the organ-sale ban. Most registry-based donations through groups like Be The Match remain unpaid and volunteer-driven, though some private arrangements and research programs do offer compensation under the apheresis exception.

Human Milk and Hair

Breast milk has both a nonprofit and a for-profit track. Nonprofit milk banks screen donors, pasteurize the milk, and distribute it primarily to hospitals for premature infants. Donors are not paid. The for-profit side is different: online marketplaces connect individual sellers with buyers, and sellers can charge several dollars per ounce. A scoping review of milk sharing in the U.S. found that for-profit sharing often involved shipping, and studies uncovered evidence of milk contamination in these channels.¹³ The contamination risk comes partly from the lack of pasteurization and partly from the logistics of mailing a perishable biological product. For sellers, the income can add up during the months they are producing surplus milk, but the market is informal, unregulated at the federal level, and carries reputational and legal ambiguity.

Hair is one of the simplest things to sell from your body. Long, untreated, naturally colored hair commands the highest prices, sometimes hundreds of dollars for a thick ponytail of 12 inches or more. Wig makers, extension producers, and theater companies are the main buyers. There are no health risks, no screening, and no federal regulation. The market operates through specialty websites and occasional in-person brokers. It is low-effort compared to every other option on this list, though the per-hour compensation is hard to calculate since growing your hair is not exactly labor.

What the Law Will Not Let You Sell

Solid organs are the clearest boundary. Under the National Organ Transplant Act, selling a kidney, a liver lobe, or any other transplantable organ is a federal felony. The reasoning behind the ban mixes concerns about exploitation, commodification of the body, and the fear that a legal market would disproportionately harvest organs from the poor. A group of physicians and ethicists have argued that rather than creating a market, the better path is to remove the financial barriers that currently discourage unpaid donation, things like travel costs, lost wages, and dependent-care expenses during recovery.¹⁴ Their position is that organ donation should be “financially neutral,” meaning donors should not go broke helping someone, but they should not profit from it either.

Surrogacy occupies a gray zone. Gestational surrogates in the U.S. are typically compensated $30,000 to $50,000 or more, but the legal framework varies wildly by state, and the ethical literature draws uncomfortable parallels between surrogacy and organ sale. Both involve someone providing body-related services or materials to another person, and in both cases, the line between compensation and commodification is debated. An analysis comparing living kidney donation and surrogacy noted that in most legal systems, payment for “the provision of body parts or bodily services is subject to moral criticism and thus also legally barred,” yet surrogacy compensation persists in many jurisdictions.¹⁵

The Gap Between Donor and Downstream Profit

One of the oddest features of the body-material economy is how little the person supplying the raw material earns compared to what the finished product sells for. Plasma donors receive $50 or so per visit, but the immunoglobulin therapies manufactured from pooled plasma sell for tens of thousands of dollars per patient per year. Egg donors receive a few thousand dollars, while a single IVF cycle using donor eggs can cost the intended parents $20,000 to $40,000. Stool donors get around $40 a sample, while the clinical FMT products derived from screened donations carry price tags many times higher.

This disconnect is not an accident. It reflects a legal and ethical framework in which your body’s raw outputs are treated as gifts or modestly compensated contributions, while the processing, testing, and distribution of those materials is treated as commercial activity. A bioethics analysis of this tension found that the prohibition on commercializing the human body “is not applied consistently and suffers from many exceptions.” Patented products derived from human biological material are freely marketed, while the donors themselves are told their contribution should be altruistic. The result, the analysis concluded, is that “the altruistic donor” ends up “most vulnerable to exploitation while being deprived of benefits.”¹⁶

U.S. courts have reinforced this asymmetry. In a series of rulings stretching from 1990 to 2008, courts held that individuals do not retain ownership of their cells or tissue samples once removed from their bodies. One case involved a patient whose removed cells were used to develop a commercially valuable cell line without his consent; the court ruled he had no ownership claim. A later case asked whether research participants who donated biological specimens could direct their transfer to a third party, and the appellate court said no.¹⁷ Once your material leaves your body, legally speaking, it is no longer yours.

Practical Considerations Before You Donate Anything

If you are thinking about selling a body product for money, a few patterns emerge from the research. First, the things that pay the best tend to demand the most from your body. Egg donation and inpatient clinical trials sit at the top of the pay scale, and both involve real medical procedures with real recovery time. Plasma and stool are on the low end per visit but can be repeated often enough to produce a steady supplemental income.

Second, screening rejection rates are high nearly everywhere. Sperm banks reject most applicants. Stool banks pass fewer than half of potential donors through screening. Egg donor agencies filter heavily on age, health history, and sometimes education or appearance. Even plasma centers turn away people with certain medications, low protein levels, or recent tattoos. Do not count on body-material income until you have actually been accepted.

Third, frequent donation of anything biological comes with a cost your body pays in a currency you cannot see on a bank statement. The protein and antibody drops in frequent plasma donors, the hormonal load of repeated egg donation cycles, the wear of extended clinical trial participation: these are real, even when the people experiencing them feel fine. The research consistently shows that donors’ subjective sense of their own health does not always match what their lab work reveals, which is worth thinking about before you sign up for the maximum donation frequency a center will allow.