Getting on the kidney transplant waiting list is a multi-step process that typically begins when your kidney function drops to a specific level and ends with a transplant center’s selection committee approving your candidacy. The whole process, from first referral to active listing, can take several months depending on how quickly you complete testing and evaluation. Here’s what each stage looks like and what you can do to move through it efficiently.
When You Become Eligible
You can begin the transplant evaluation process when your glomerular filtration rate (GFR), a measure of how well your kidneys filter waste, falls between 25 and 30. To actually qualify for the waiting list, your GFR generally needs to be at or below 20. If your GFR is slightly higher (up to 25), you may still qualify in two situations: your kidney function is declining rapidly, by at least 10 points per year, or you have a living donor lined up.
You do not need to be on dialysis to get listed. In fact, getting listed before dialysis starts, called preemptive listing, leads to better outcomes. Patients who receive a transplant before dialysis have a lower risk of rejection, longer survival, better quality of life, and avoid the dietary restrictions and health complications that come with dialysis. If your nephrologist hasn’t brought up transplant evaluation yet and your GFR is approaching 30, it’s worth raising the question yourself.
Starting the Referral
The process begins with a referral to a transplant center. Your nephrologist or dialysis unit can send one, but you’re also allowed to contact a transplant center’s pre-transplant office directly. You don’t need to wait for your doctor to initiate it.
Once the referral is submitted, a member of the pre-transplant team will conduct a medical interview with you over the phone. After that, you and your referring doctor will receive a letter outlining the routine health maintenance testing you need to complete before the formal evaluation begins. Think of this as a checklist to get through before your in-person evaluation days at the transplant center.
What the Medical Evaluation Involves
The evaluation is thorough because the transplant team needs to confirm that you’re healthy enough to survive major surgery and a lifetime of anti-rejection medication. Expect the process to involve multiple appointments over weeks or sometimes months. Here’s what’s typically included:
Blood Work
Several blood draws will check your blood type (needed to match you with a compatible donor), your tissue type (known as HLA typing, which measures how closely your immune markers match a potential donor’s), and your antibody levels. High antibody levels can make it harder to find a compatible kidney, so this result shapes your placement on the list. You’ll also be screened for infections including HIV and hepatitis B and C, along with general markers of organ function.
Heart and Lung Testing
Because kidney disease puts extra strain on the cardiovascular system, cardiac testing is a major part of evaluation. You may need an electrocardiogram (heart tracing), an echocardiogram (heart ultrasound), and a stress test where you exercise while your heart is monitored. Lung testing typically includes a chest X-ray and spirometry, a breathing test that measures how much air you can move in and out.
Imaging
An ultrasound of the blood vessels in your groin checks that the arteries and veins surgeons would connect to the new kidney are in good condition. Additional imaging may be ordered depending on your health history.
The Psychosocial Evaluation
Beyond physical health, transplant centers assess whether you have the practical support system needed to manage life after transplant. A social worker will ask about your living situation, whether you have people who can help with transportation to follow-up appointments, assistance managing medications, and monitoring for symptoms of complications. These requirements vary significantly from one program to another.
The transplant team also looks at your history of following medical recommendations. A consistent, documented pattern of skipping medications or missing appointments can count against you, though the national organ-sharing network (OPTN) has emphasized that teams should consider the barriers behind non-adherence, such as limited access to care, financial hardship, or geographic challenges, rather than treating it as a simple character flaw. OPTN’s official position is that access to transplant should not depend on demonstrating social relationships, and that centers should work to address barriers rather than just screen patients out.
Substance abuse and untreated mental health conditions can delay listing, but they don’t automatically disqualify you. Most programs will work with you on a treatment plan and reconsider your candidacy once you meet their benchmarks.
How the Selection Committee Decides
After your evaluation is complete, your case goes before the transplant center’s selection committee. This is a group that includes surgeons, nephrologists, social workers, and other specialists. Each program has its own standards for accepting candidates, and the decision-making process varies. Some committees use a majority vote, others rely on consensus. In many programs, a designated advocate presents the case for listing a patient while another member plays the role of raising concerns, ensuring all angles are considered before a decision is made.
If the committee approves you, you’re added to the national waiting list managed by UNOS (the United Network for Organ Sharing). If they don’t approve you immediately, they may ask you to address specific issues first, like losing weight, quitting smoking, or completing additional cardiac treatment, before reconsidering.
What Happens Once You’re Listed
The average wait for a deceased donor kidney is 3 to 5 years at most centers, though it can be significantly longer depending on where you live. Geography matters because organs are matched partly based on the distance between the donor hospital and the transplant hospital. Some regions have more donors relative to the number of people waiting, which shortens wait times. Others have far more candidates than available organs.
Your wait time clock starts when you’re officially added to the list, or in some cases, it can be backdated to when you started dialysis or when your GFR first dropped below 20, whichever came first. This is an important detail to confirm with your transplant coordinator, because the earlier your effective start date, the higher your priority climbs over time.
Listing at Multiple Centers
OPTN policy allows you to register at two or more transplant hospitals, and this is one of the most effective ways to improve your chances. Each center requires its own separate evaluation, and you’ll need to meet that program’s specific conditions, including being able to reach the hospital within a set timeframe if a kidney becomes available. Some programs don’t accept multiple-listed patients, so check before beginning a second evaluation.
A few important rules apply. You cannot add up or combine your waiting time across hospitals. You can, however, transfer your primary waiting time from one center to another if you decide to switch. Listing at multiple hospitals in the same city or neighboring cities is unlikely to help much, since organ matching is based on distance from the donor hospital, and a few miles won’t change your priority. The real advantage comes from listing at a center in a different region where wait times are shorter.
Steps You Can Take Now
If you’re approaching the GFR threshold, the single most important thing you can do is start the evaluation process early. Patients who begin evaluation when their GFR is between 25 and 30 give themselves the best chance of getting listed before dialysis becomes necessary, and every month of accrued wait time matters when a kidney becomes available.
While you’re going through evaluation, stay current on all recommended health screenings, keep your blood pressure and blood sugar well managed, and stay in close contact with your transplant coordinator. Many programs require periodic re-testing to keep you active on the list, and falling behind on updates can move your status to inactive without you realizing it. Ask your coordinator exactly what’s needed and how often, then put those deadlines somewhere you won’t miss them.
If you have a willing friend or family member, pursue living donor evaluation at the same time. A living donor kidney lasts longer on average than a deceased donor kidney, and the transplant can be scheduled rather than happening on short notice. Your potential donor contacts the transplant center independently and goes through their own separate medical evaluation.