Almost anyone can be a potential organ donor after death, regardless of age or most medical conditions. There is no strict upper age limit, no single health condition that automatically rules everyone out, and no requirement to be in perfect health. In 2024, nearly 17,000 deceased donors in the United States made more than 41,000 organ transplants possible. The real determining factor isn’t who you are when you’re alive. It’s whether your organs are functional and suitable at the time of death.
Age Is Not a Barrier
One of the most common misconceptions about organ donation is that you can be “too old.” In reality, there is no maximum age for deceased organ donation. The oldest recorded organ donor in the United States was Cecil, a 95-year-old West Virginia coal miner who donated his liver in May 2021, saving a woman’s life and enhancing the lives of more than 20 others through tissue and skin donations. What matters is the condition of the organs themselves, not the number on a birth certificate.
On the other end of the spectrum, infants and children can also be donors. Because organ size matters for transplant matching, very small children most often receive organs from other young donors. Older children and adults can sometimes match as well, and children may receive partial organs, such as a piece of a liver or lung.
How Death Is Determined Before Donation
Organ donation from a deceased person can only happen after death has been formally declared. This occurs through one of two pathways.
The first is brain death, defined as the irreversible loss of all brain function, including the brain stem. When someone is brain dead, mechanical ventilation can keep the heart beating and blood flowing to the organs temporarily, which preserves them for transplant. This is the most common pathway for organ donation.
The second pathway is circulatory death. This applies to patients whose families and care team have agreed that nothing more can be done to save their life. Life support is withdrawn, and the medical team waits for the heart to stop on its own. A physician then observes the patient for two to five minutes to confirm the heart does not restart spontaneously before pronouncing death. Only then can organ recovery begin.
Medical Conditions That May Affect Eligibility
No single diagnosis automatically disqualifies someone from organ donation. Instead, a specialist from the local organ procurement organization (OPO) evaluates each potential donor individually at the time of death. They review lab work, imaging, and the patient’s medical history to assess whether each organ is healthy enough to transplant.
Active infections are one of the main concerns. Screening includes testing for HIV, hepatitis B and C, syphilis, cytomegalovirus, tuberculosis, and several rarer infections. But even a positive result doesn’t necessarily end the conversation. Under the HIV Organ Policy Equity (HOPE) Act, organs from donors living with HIV can now be transplanted into recipients who also have HIV. As of late 2024, kidney and liver transplants from HIV-positive donors no longer require a special research protocol, making them part of standard practice. Other organ types from HIV-positive donors still require research oversight, but the door is open.
Active cancer that has spread throughout the body generally prevents organ donation, because transplanting those organs could transfer cancer cells to the recipient. But a history of certain cancers, particularly those that were treated and resolved, does not rule someone out. The OPO makes that call based on the specifics.
What the Screening Process Looks Like
Once a potential donor is identified, the OPO runs a thorough medical evaluation. This includes blood chemistry panels, liver function tests, complete blood counts, blood cultures, chest X-rays, and an electrocardiogram. Depending on the organs being considered, they may also order an echocardiogram, a bronchoscopy to evaluate the lungs, or biopsies of the liver or kidneys. Tissue typing and blood type matching are performed to find compatible recipients.
The entire process is time-sensitive. Organs begin to deteriorate once blood flow stops, and each organ has a different window of viability. Hearts and lungs tolerate only a few hours outside the body. Livers can last somewhat longer. Kidneys are the most resilient, with transplants successfully performed even after 40 or more hours of cold storage, though outcomes tend to be better with shorter times. This urgency is why the medical evaluation happens rapidly and why matching algorithms run around the clock.
How Legal Consent Works
In the United States, there are two ways someone becomes a deceased organ donor. The first is called first-person authorization: you register as an organ donor, typically at the DMV when getting a driver’s license or through an online donor registry. The second pathway applies when someone has not registered. In that case, the next of kin can authorize donation on their behalf.
If you have registered as a donor, that decision is legally binding under the Revised Uniform Anatomical Gift Act. No one, including your family, has the legal right to override your choice. The law is explicit: families should be informed about the donation, not asked for permission. In practice, about 80% of organ procurement organizations in the U.S. honor first-person authorization even when a family objects. Those objections arise in fewer than 10% of cases involving registered donors, but they do happen, which is why having clear conversations with your family about your wishes matters.
For children under 18, the rules are different. A parent or legal guardian must give permission for donation. In most states, if a child dies before turning 18, the parents make the final decision regardless of whether the child expressed a preference.
Who Should Register
Given that there is no age cutoff, that most medical conditions don’t automatically disqualify you, and that the final decision about organ suitability is always made by medical professionals at the time of death, the practical answer is simple: virtually everyone is a candidate. Registering as a donor costs nothing and commits you to nothing during your lifetime. The medical team will never compromise your care to preserve organs, and the evaluation only begins after death is declared.
In 2024, each deceased donor provided an average of roughly 2.4 organs for transplant, though some donors give far more. One person’s decision to register can directly save multiple lives, and tissue donations like skin, bone, and corneas can help dozens more.