Becoming a Living Liver Donor

Becoming a living liver donor is less familiar than kidney donation but rests on the same principle — a healthy person can give part of themselves so someone else survives. The difference is that the liver regenerates.

The liver regrows

In living liver donation the surgeon removes a portion — roughly half the donor's liver — and transplants it. Both the piece left in the donor and the piece given to the recipient then regenerate. The donor's liver returns to close to its normal size in about two months.

That regeneration is what makes the whole thing possible. It is also why the assessment is exacting: the surgeon must leave enough liver behind to keep the donor safe while it regrows.

Who can donate part of a liver

• Generally aged 18 and above, with an upper limit that varies by center
• In good general health, with healthy liver function and no significant liver disease
• A suitable blood type and liver anatomy — imaging is a much bigger part of this evaluation than for kidney donation
• Body weight in a range the center considers safe, since fatty liver affects both regeneration and surgical risk
• Free from active substance misuse, particularly alcohol

How it differs from donating a kidney

Living liver donation generally involves more extensive surgery and a longer recovery than living kidney donation. Living liver donation is major abdominal surgery. The surgical approach varies by transplant center and individual circumstances. The hospital stay is longer at around five days, and recovery runs about eight to twelve weeks against four to six for a kidney.

The risk profile is correspondingly higher. Bleeding, bile leaks, infection and hernia are the complications centers commonly discuss. Any center offering living liver donation should give you their own outcome figures — ask for them.

Recovery

Expect roughly five days in the hospital, several weeks before returning to desk work, and eight to twelve weeks to full recovery. No heavy lifting during that period. Most donors then return to entirely ordinary life — most of the liver's function is restored well before the organ has finished regrowing.

Starting the conversation

What the evaluation involves

Liver donor evaluation is more imaging-heavy than kidney evaluation, because the surgeon has to map your liver's anatomy before deciding whether donation is safe and which portion to take. Expect CT or MRI scanning of the liver and its blood vessels, extensive blood work including liver function tests, screening for hepatitis and other infections, cardiac assessment, and a psychological evaluation.

Two findings commonly stop a liver donation that a kidney evaluation would have passed. The first is fatty liver — even moderate fat in the liver affects how well it regenerates, and some centers will ask a donor to lose weight and be rescanned. The second is anatomy: blood vessel and bile duct arrangements vary between people, and some configurations make a safe split impossible. Neither is a reflection on you, and neither is usually predictable in advance.

As with kidney donation, you are assigned an independent donor advocate whose sole responsibility is your interests, and you can withdraw at any point without giving a reason.

MatchingDonors registers potential living donors for organs beyond the kidney. As with kidney donation, the nonprofit makes the introduction and a transplant center makes every medical decision. If you are weighing this against kidney donation, see Kidney Donation Risks and Recovery for comparison.