Kidney Donor Requirements: Who Can Donate?

The honest answer about kidney donor requirements is that only a transplant center can tell you whether you qualify. What follows is the general shape of it, so you know whether it is worth starting the conversation.

The general baseline

• Living kidney donors are generally required to be at least 18 years old.
• Good kidney function of your own, confirmed by blood and urine testing.
• No uncontrolled diabetes and no uncontrolled high blood pressure.
• No active cancer, and no infection that could transmit through a transplant.
• Generally good physical and mental health, assessed as a whole rather than condition by condition.

Note the word *uncontrolled*. Well-managed conditions are assessed individually — they are not the automatic exclusions people assume.

What the evaluation actually screens for

A transplant center is answering one question: is donating a kidney expected to be safe for you over the long term? To answer it they examine kidney function and anatomy, blood pressure over time, blood sugar, cardiac and general health, your family medical history and your mental readiness. They also confirm nobody is pressuring you.

Common Myths That Stop People From Volunteering

"I am too old"

There is no fixed upper age limit. Centers assess health, not birthdays. People well past fifty — and past sixty — donate.

"My blood type does not match"

A blood-type mismatch used to end the conversation. Often it no longer does. Paired exchange lets your kidney go to a compatible stranger while your intended recipient receives one from another mismatched pair. Thousands of donors registered with MatchingDonors have specifically indicated they are willing to take part in paired exchanges and chains.

"I take medication"

It depends entirely on which medication and why. A well-controlled condition on stable treatment is a conversation, not a closed door.

"Someone in my family had kidney disease"

This is taken seriously, because it affects your own long-term risk — but it is assessed, not assumed. Some family histories rule donation out. Many do not.

What usually does rule donation out

• Significantly reduced kidney function of your own
• Uncontrolled diabetes or uncontrolled hypertension
• Active cancer
• Serious untreated heart or lung disease
• Active substance misuse, or a mental-health crisis that makes informed consent unsafe at this time

Being turned down is not a verdict on you

Centers decline potential donors regularly, and it is usually about long-term risk rather than anything you did. Many people declined at one point become eligible later — after weight loss, after blood pressure comes under control, after a condition resolves.

What happens at your first appointment

The first contact is usually a phone screening rather than a hospital visit. A living-donor coordinator asks about your age, general health, medications, and whether you have a particular person in mind. It typically takes about 20 minutes and rules out the clearest mismatches before anyone travels anywhere.

If that goes well, blood and urine testing follows, then a fuller day of assessment. You will meet an independent donor advocate — a person whose only responsibility is you, not the recipient and not the transplant center. Use them. They are the right person to ask the awkward questions about time off, insurance, and what happens if you change your mind.

If you clear the requirements, the next question is usually what surgery and recovery actually involve. That is covered on kidney donation risks and recovery.