There is no official age limit for receiving an organ transplant in the United States. The national organ sharing network (UNOS) does not set a standard age cutoff, and federal law actually prohibits using age alone to exclude someone from transplantation. Each transplant center sets its own criteria, but the trend across medicine is to evaluate older candidates based on overall health rather than their birthday.
Why No Fixed Age Cutoff Exists
The Organ Procurement and Transplantation Network, which oversees transplant policy in the U.S., states plainly that age itself should not be used to restrict transplantation. This position rests on both ethical and legal ground. The Age Discrimination Act of 1975 prevents federally funded programs from engaging in age discrimination, and the Affordable Care Act reinforces this by prohibiting health care programs from discriminating based on age alone.
That said, transplant teams are allowed to consider factors closely related to age, like life expectancy and the likely long-term success of the transplanted organ. A 75-year-old in excellent health may be a stronger candidate than a 55-year-old with multiple serious conditions. The key distinction is that age can inform the evaluation, but it cannot be the sole reason someone is turned away.
What Transplant Centers Actually Evaluate
Instead of looking at a number on your driver’s license, transplant teams assess what’s sometimes called “biological age,” a picture of how well your body is actually functioning. For older candidates, this evaluation tends to be more thorough. At many centers, patients 70 and older are required to undergo heart catheterization to check for significant coronary artery disease. Depending on your medical history, you may also need cardiac stress testing, echocardiography, carotid ultrasound, CT imaging of blood vessels, or pulmonary function tests.
Frailty has become one of the most important factors in evaluating older transplant candidates. Transplant teams use structured assessments that measure things like grip strength, walking speed, balance, ability to stand from a chair, energy levels, physical activity, and unintentional weight loss. If three or more of these areas show decline, a person is generally considered frail. Among kidney transplant candidates 65 and older, one-year survival was about 86% for those classified as frail, compared to roughly 97% for those who were not. That gap illustrates why physical resilience matters far more than chronological age when predicting transplant success.
Some centers also screen for cognitive function, depression, and overall functional independence. The goal is to determine whether you can manage the demanding recovery process, stick to a complex medication schedule, and attend frequent follow-up appointments.
Kidney Transplants in Older Adults
Kidney transplants are the most common type of organ transplant, and they’re also the area with the most data on older recipients. A large study of over 5,600 patients aged 70 and older who were waitlisted for kidney transplants found that those who received a transplant had a 41% lower risk of death compared to those who stayed on dialysis. The survival benefit became clear about 125 days after surgery, and by 1.8 years post-transplant, recipients had caught up to and surpassed the survival of those still waiting.
In Europe, a program called the Eurotransplant Senior Program has been running since 1999, specifically matching kidneys from donors 65 and older with recipients 65 and older. This “old-for-old” approach reduces wait times for older patients while making good use of organs that might otherwise go unused. The program has shown solid results over more than two decades, and similar strategies are being explored elsewhere.
Liver Transplants and the Role of Illness Severity
For liver transplants, age interacts with how sick someone is at the time of surgery. Researchers studied over 15,600 liver transplant recipients and found that being 70 or older carried a higher risk of graft loss on its own, and having severe liver disease (measured by a high illness severity score) also independently raised risk. But the combination of both factors together was worse than you’d expect from adding the two risks. Recipients 70 and older with the most severe liver disease had one-year graft survival of just 56%.
The encouraging finding was that older recipients whose liver disease was less severe did not show this amplified risk. Their outcomes were much closer to younger patients. This means age alone didn’t doom the transplant. It was the pairing of advanced age with very advanced disease that created problems. For an older patient whose liver failure is caught before it becomes extreme, transplantation remains a reasonable option.
What Could Get You Turned Down
While age alone won’t disqualify you, the conditions that accumulate with age can. Transplant centers commonly decline candidates based on:
- Severe heart disease that makes surviving major surgery too risky
- Active or untreated cancer, since the immune-suppressing drugs needed after transplant can accelerate cancer growth
- Significant frailty that would make recovery unlikely
- Peripheral vascular disease severe enough that surgeons can’t safely connect the new organ to your blood vessels
- Cognitive decline serious enough to prevent managing post-transplant care independently
Some of these factors are modifiable. Transplant centers may recommend a period of “prehabilitation,” exercise and nutritional support to improve your physical condition before reconsidering your candidacy. Being turned down at one center also doesn’t mean every center will reach the same conclusion, since each program applies its own thresholds.
People in Their 70s, 80s, and Beyond
Transplants in patients over 70 are no longer rare. In the liver transplant data alone, 343 recipients were 70 or older during a five-year study window. Some centers do set informal cutoffs around 75 or 80, but these vary and are not universal rules. Charlotte Markle, who received a kidney transplant at Mayo Clinic in 1966, was still thriving at 81 as one of the world’s longest-surviving transplant recipients, a testament to how durable transplant outcomes can be across a full lifespan.
The practical reality is that older candidates face a more intensive evaluation process, may wait longer if they need a closely matched organ, and face somewhat higher surgical risks. But the data consistently shows that for selected older patients, transplantation offers a meaningful survival advantage and better quality of life compared to the alternative, whether that’s dialysis for kidney failure or continued decline from liver disease.