Kidney Donation Process: Step-by-Step Guide for Living Donors

The kidney donation process begins long before a surgeon removes a kidney. A person who says, “I want to donate my kidney,” is not immediately considered an approved donor. They are considered a potential living kidney donor, and the purpose of the next several stages is to determine whether donation is medically safe, psychologically appropriate, legally permitted and compatible with the intended recipient.

A modern living-donor program is intentionally cautious.

The recipient may urgently need transplantation, but the potential donor is usually a healthy person who does not need surgery for their own medical benefit. The transplant team must therefore be able to justify exposing that person to an operation and to life with one kidney.

This creates an important principle:

The objective of donor evaluation is not to make the transplant happen at any cost.

The objective is to determine whether donation is an acceptable choice for this specific donor.

Sometimes the process ends with surgery.

Sometimes it ends because doctors find a medical issue.

Sometimes the donor and recipient do not match.

Sometimes additional tests are required before a decision can be made.

The kidney donation process is therefore not simply a checklist designed to approve people. It is a safety pathway designed to protect the donor while determining whether transplantation can proceed appropriately.

This guide walks through the entire process from first contact to surgery, recovery and long-term follow-up.

Kidney donation process: the direct answer

The kidney donation process usually starts when a potential donor contacts the recipient’s transplant program and provides basic health information. If preliminary screening is acceptable, the donor undergoes a detailed evaluation including blood and urine tests, kidney-function assessment, blood-pressure and metabolic screening, infection testing, kidney imaging, heart and lung assessment, psychosocial evaluation and donor-recipient compatibility testing.

The transplant program then reviews whether donation is medically appropriate. If the donor is approved and the transplant pathway proceeds, surgery can be scheduled.

After nephrectomy, the donor usually spends several days in hospital, recovers gradually over several weeks and continues kidney-health follow-up afterward.

The kidney donation process at a glance

The exact sequence varies between transplant programs, and several steps may take place at the same time.

Step 1: The potential donor contacts the transplant center

The process usually begins with the donor contacting the transplant program that is evaluating or treating the intended recipient.

This first contact may happen through:

• an online donor form,
• a telephone call,
• a living-donor coordinator,
• or an in-person consultation.

The potential donor may be a parent, sibling, adult child, spouse or another person who may qualify under the medical and legal framework of the country where transplantation will occur.

The first contact does not mean the donor has been approved.

It means only:

“I am interested in being evaluated as a potential kidney donor.”

This distinction is important.

Families sometimes assume that a person becomes “the donor” as soon as they volunteer.

Medically, that is not correct.

Until evaluation is completed, the person is a potential living kidney donor.

The transplant program must still determine whether donation is safe and whether the proposed donor-recipient pair can proceed.

Step 2: Initial health screening

The living-donor team usually begins by collecting basic medical information.

This allows obvious concerns to be identified before the donor travels through a long and expensive evaluation.

Questions may cover:

• age,
• height and weight,
• blood-pressure history,
• diabetes or prediabetes,
• kidney disease,
• kidney stones,
• urinary infections,
• heart disease,
• stroke,
• blood clots,
• cancer,
• previous operations,
• pregnancy history,
• medications,
• smoking,
• alcohol use,
• substance use,
• mental health,
• and family history of kidney disease.

The donor may also be asked about their relationship with the intended recipient.

That relationship can become especially important in countries where living donation is regulated according to family or marital relationships.

A screening questionnaire is not designed to find the “right answers.”

It is designed to identify the donor’s real medical profile.

Potential donors should therefore provide complete and accurate information.

Hiding high blood pressure, previous kidney stones or another medical condition does not help the recipient.

It can expose the donor to unnecessary risk.

How to donate a kidney

How to donate a kidney: where do you start?

For someone searching how to donate a kidney, the correct starting point is usually an authorized kidney transplant program.

If you are considering donating to someone you know, contact the transplant center evaluating that recipient.

The donor team will explain what information is needed.

You may be asked to provide:

• your medical history,
• current medications,
• previous operations,
• history of kidney disease or stones,
• blood-pressure information,
• diabetes history,
• relevant family diseases,
• and information about your relationship with the recipient.

In most cases, it is unnecessary to independently order every possible donor test before contacting the hospital.

Recent outside medical results can sometimes be useful for preliminary review, particularly in international cases, but the transplant center determines which tests are required and which need to be repeated.

A creatinine test and blood group from a private laboratory are not the same as formal donor approval.

Step 3: Preliminary blood and urine testing

If initial screening does not identify an obvious contraindication, the donor usually moves into laboratory testing.

The exact tests vary between centers.

Common preliminary tests may include:

• complete blood count,
• kidney-function tests,
• electrolytes,
• glucose,
• liver tests,
• urinalysis,
• urinary protein or albumin,
• and infection screening.

Blood pressure is also assessed.

These tests help answer an early question:

Is there any evidence that the potential donor may have kidney disease, metabolic disease or another condition that requires investigation before donation?

For example, a donor may discover unexpectedly high blood sugar.

Another may have protein in the urine.

Another may have kidney function lower than expected for their age.

An abnormal result does not always mean permanent disqualification.

Some results simply need confirmation or further testing.

The process is therefore progressive.

The transplant center first identifies concerns and then determines whether those concerns can be safely explained.

Step 4: Blood group testing

Blood group is one of the first compatibility factors many families think about.

The donor and recipient are tested for ABO blood group.

Blood-group compatibility can affect whether direct transplantation is possible.

However, blood type is only one part of kidney matching.

A donor can have a compatible blood type and still be immunologically incompatible with the recipient.

Likewise, a donor with an incompatible blood group may still be useful in selected transplant pathways, depending on the country and transplant center.

Possible pathways can include:

• kidney paired donation,
• selected ABO-incompatible transplantation,
• or evaluation of another potential donor.

Your dedicated article on blood type and tissue matching can explain those pathways in greater detail.

Within the kidney donation process, blood typing is simply one of several steps used to determine whether donor and recipient can proceed together.

Step 5: HLA typing

Human leukocyte antigens, usually called HLA, are immune-system markers.

HLA testing helps the transplant team understand how immunologically similar or different the donor and recipient are.

Perfect HLA matching is not required for most kidney transplants.

Modern transplantation can succeed with significant HLA differences.

However, HLA information becomes important when combined with the recipient’s antibody profile.

The recipient may already have antibodies against specific HLA markers.

These antibodies can develop after:

• pregnancy,
• previous transplantation,
• or blood transfusions.

The transplant laboratory therefore studies not only the donor’s HLA profile but also whether the recipient has antibodies directed against that donor.

Step 6: Crossmatch testing

Crossmatching is one of the most important compatibility steps.

The purpose is to assess whether the recipient’s immune system is likely to react strongly against the proposed donor.

A reassuring crossmatch supports direct transplantation.

A positive or concerning crossmatch can indicate a higher risk of antibody-mediated rejection.

Importantly, an incompatible crossmatch does not mean the donor has a bad kidney.

The donor may be perfectly healthy.

The problem is the interaction between that donor and that recipient.

For example:

A wife may have excellent kidney function.

Her kidney anatomy may be normal.

She may be medically suitable to donate.

But her husband may have antibodies that strongly react against her HLA profile.

She may therefore remain a suitable living donor, while not being suitable as a direct donor for her husband.

In a country with a regulated kidney paired donation program, the pair may sometimes enter an exchange pathway instead.

Step 7: The full living donor evaluation

If preliminary screening is acceptable, the donor moves into a detailed living-donor evaluation.

This can take place during one intensive hospital visit or across several appointments.

The donor may meet:

• a living-donor coordinator,
• transplant nephrologist,
• transplant surgeon,
• psychologist or psychiatrist,
• social worker,
• anesthesia team,
• radiology team,
• and additional specialists if necessary.

Each professional is evaluating a different part of donor safety.

The central question is not simply:

“Can this kidney be transplanted?”

It is:

“Can this person safely undergo kidney donation?”

Those are different questions.

A kidney can be technically transplantable while nephrectomy is not sufficiently safe for the donor.

Who evaluates a kidney donor?

The exact structure varies by transplant system.

The principle remains the same:

living donation should be reviewed from multiple medical and psychosocial perspectives.

Step 8: Medical history and physical examination

A detailed medical history is essential because living donors may have risk factors that are not obvious from appearance.

A person can look young, fit and healthy while still having:

• hypertension,
• albuminuria,
• inherited kidney disease,
• diabetes risk,
• structural kidney abnormalities,
• cardiovascular disease,
• or another problem relevant to nephrectomy.

The medical history commonly addresses:

• previous kidney disease,
• high blood pressure,
• diabetes,
• kidney stones,
• urinary abnormalities,
• heart disease,
• blood clots,
• stroke,
• autoimmune disease,
• cancer,
• recurrent infections,
• previous abdominal surgery,
• lung disease,
• pregnancy complications,
• and family history of kidney disease.

A physical examination may include:

• blood pressure,
• heart rate,
• weight,
• BMI,
• heart examination,
• lung examination,
• abdominal examination,
• and other assessments appropriate to age and medical history.

Living-donor evaluation is intentionally more cautious than ordinary health screening.

The donor is starting as a healthy person and is considering elective major surgery.

Step 9: Measuring kidney function

The donor must have sufficient kidney reserve to live safely after nephrectomy.

Serum creatinine is commonly measured.

An estimated glomerular filtration rate, or eGFR, is then calculated.

Additional kidney-function measurements may be used when necessary.

The transplant team interprets kidney function in the context of:

• age,
• sex,
• blood pressure,
• urine albumin,
• metabolic risk,
• family history,
• and the donor’s overall health.

One number should not be interpreted in isolation.

For example, a particular eGFR may be entirely expected for one older donor but concerning in a much younger adult.

The purpose is not merely to prove that the kidneys work today.

The team tries to estimate whether the donor is likely to maintain sufficient kidney health for decades after losing one kidney.

Step 10: Urine testing

Urine tests can reveal kidney abnormalities that are not obvious from serum creatinine.

The donor may be tested for:

• protein,
• albumin,
• blood,
• infection,
• and other urinary abnormalities.

Persistent protein or albumin in the urine can indicate kidney damage.

Blood in the urine may require further investigation.

A urinary infection may need treatment.

A donor with previous kidney stones may need additional evaluation of stone risk.

The transplant team needs confidence that the remaining kidney will not begin its one-kidney life with an unrecognized condition.

Step 11: Blood-pressure evaluation

Blood pressure is one of the most important predictors of long-term kidney and cardiovascular health.

A single reading in a clinic may not be enough.

If results are borderline, the donor may need repeated readings or ambulatory blood-pressure monitoring.

Doctors consider:

• how high the blood pressure is,
• whether medication is required,
• how many medications are needed,
• whether there is evidence of organ damage,
• and how hypertension interacts with the donor’s age and long-term risk.

Some potential donors with well-controlled hypertension may still be considered in selected situations.

Others may be declined.

The decision is individualized.

Potential donors should not stop prescribed blood-pressure medication to make their results appear better.

The team needs the donor’s real risk profile.

Step 12: Diabetes and metabolic testing

Diabetes is a major cause of chronic kidney disease.

That makes glucose and metabolic health highly relevant to living donation.

Testing may include:

• fasting glucose,
• HbA1c,
• and additional metabolic tests if required.

Doctors also consider:

• BMI,
• family history of diabetes,
• age,
• blood pressure,
• and other cardiovascular risk factors.

A potential donor may have normal kidney function but a high predicted risk of developing diabetes and kidney disease later in life.

For a young donor in particular, long-term risk can matter more than today’s kidney results.

This is why transplant teams sometimes decline people who feel completely healthy.

Donation is assessed against the donor’s future health, not only their present condition.

Step 13: Infection screening

Kidney transplantation can transmit certain infections from donor to recipient.

The recipient will also take immunosuppressive medication after transplantation.

Living donors therefore undergo infection screening before surgery.

The precise panel varies by jurisdiction and transplant program.

Testing may include infections such as:

• hepatitis B,
• hepatitis C,
• HIV,
• CMV,
• and other infections depending on geography, exposure and regulations.

Travel history may matter.

A person who has lived or travelled in a region where a particular infection is common may require additional testing.

Certain infection tests may also be repeated close to the operation because infection status can change between initial evaluation and surgery.

Step 14: Cancer screening

Transplant programs also need to reduce the risk of an undiagnosed malignancy in the donor.

The potential donor may need routine age-appropriate cancer screening to be up to date.

Depending on age and sex, this may include:

• cervical screening,
• mammography,
• colon cancer screening,
• skin assessment,
• or other indicated tests.

These are not necessarily special “kidney donor tests.”

They are routine preventive tests that may need to be current before elective living donation.

An abnormal screening result may delay donation while further assessment is completed.

That does not always mean the donor has cancer or is permanently excluded.

It means the result must be clarified before surgery.

Step 15: Heart and lung assessment

Kidney donation requires general anesthesia.

The donor must therefore be medically capable of tolerating major surgery.

An electrocardiogram is commonly performed.

Further cardiac assessment may be required based on:

• age,
• symptoms,
• diabetes risk,
• blood pressure,
• cardiovascular history,
• or other risk factors.

Lung function or chest imaging may also be assessed when appropriate.

Someone can have excellent kidneys but still be unsafe for surgery because of severe cardiovascular disease.

Donor eligibility therefore evaluates the whole person.

Step 16: Kidney imaging

Detailed kidney imaging is essential for surgical planning.

CT angiography or another imaging method can show:

• kidney size,
• renal arteries,
• renal veins,
• ureters,
• kidney stones,
• cysts,
• masses,
• scarring,
• and anatomical variations.

Some donors have one renal artery to each kidney.

Others have multiple arteries.

Venous anatomy can also vary.

Surgeons need to understand this anatomy before deciding which kidney to remove and how to approach the operation.

Kidney imaging serves both donor safety and recipient planning.

Which kidney is donated?

The answer is individualized.

The surgical team aims first to leave the donor with the kidney that is most appropriate to keep.

If one kidney has better function, the donor may generally keep the better-functioning kidney when donation is still considered safe.

If both kidneys function similarly, surgical anatomy may influence which side is removed.

One kidney may have:

• simpler blood vessels,
• more favorable ureter anatomy,
• or another characteristic that makes donation technically preferable.

The recipient’s needs can also be considered.

The final decision therefore involves both nephrology and surgical planning.

Step 17: Psychosocial evaluation

Living donation is not purely a medical event.

It can affect:

• emotional health,
• family relationships,
• employment,
• finances,
• recovery responsibilities,
• and expectations about the recipient’s outcome.

Potential donors therefore undergo psychosocial assessment.

The discussion may explore:

• why the donor wants to donate,
• how well they understand the operation,
• how they feel about potential complications,
• what they expect from the recipient,
• how they would react if the transplant did not succeed,
• whether they have adequate support during recovery,
• and whether there are significant psychological or social concerns.

A donor may be medically excellent while needing additional time to think through the emotional implications of surgery.

That is part of responsible donor care.

How to become a kidney donor

How to become a kidney donor: approval takes more than willingness

Someone searching how to become a kidney donor may imagine the process as:

1. decide to donate,
2. have a blood test,
3. schedule surgery.

The real process is much broader.

A potential donor needs evaluation of:

• kidney function,
• blood pressure,
• general medical health,
• cardiovascular risk,
• kidney anatomy,
• infection risk,
• donor-recipient compatibility,
• psychosocial readiness,
• and legal eligibility.

A person may be enthusiastic and medically healthy but immunologically incompatible.

Another may match the recipient extremely well but have a medical condition that makes nephrectomy unsafe.

Another may have favorable medical results but require additional ethics or regulatory review because of the donor-recipient relationship.

This is especially important for international patients.

Before formal approval, the person travelling with the recipient should be described as a potential donor, not as a guaranteed donor.

Step 18: Donor independence

A high-quality living-donor pathway recognizes that the donor is a separate patient.

The donor’s medical interests are not identical to the recipient’s interests.

The recipient benefits medically from receiving a kidney.

The donor does not need nephrectomy for their own health.

That difference is why donor assessment must prioritize donor safety even when the recipient urgently needs transplantation.

The donor should have opportunities to discuss concerns privately with the donor team.

The donor’s medical information should also be handled confidentially.

If evaluation identifies a reason not to proceed, the donor should not necessarily be required to disclose every private medical detail to the recipient or family.

Step 19: Financial and practical planning

Kidney donation can create practical burdens even when the donor is medically eligible.

These may include:

• time away from work,
• travel,
• accommodation,
• childcare,
• transportation,
• help during recovery,
• and care for other family members.

These issues should be discussed before surgery.

A donor recovering from abdominal surgery may temporarily be unable to:

• drive,
• lift children,
• carry heavy bags,
• perform manual work,
• or manage all household responsibilities.

Financial and logistical planning is therefore part of safe donation.

It reduces pressure to return to work or physical activity too quickly.

Step 20: Multidisciplinary review

After the major tests are complete, the donor’s case is reviewed.

Depending on the transplant program, the decision may involve:

• transplant nephrology,
• transplant surgery,
• psychosocial professionals,
• nursing,
• anesthesiology,
• and other specialists.

Possible outcomes include:

Approved

The team considers donation medically acceptable and believes the donor can proceed to final planning if the recipient is also ready.

Additional testing needed

A finding requires more information before a decision can be made.

Temporarily deferred

The donor may need treatment, weight change, repeat testing or another medical intervention before reconsideration.

Declined

The team believes donation would create unacceptable risk or should not proceed for another significant reason.

Being declined as a living donor does not necessarily mean the person is seriously ill.

Donor criteria are intentionally conservative.

A condition that is manageable in ordinary life can still be considered too risky when a healthy person is considering elective organ removal.

Step 21: What happens if the donor is not approved?

The next step depends on the reason.

If donation is declined because of a medical risk, the donor may need follow-up for their own health.

If the problem is temporary, reevaluation may sometimes be possible.

If the donor is medically suitable but incompatible with the intended recipient, kidney paired donation may be explored where available.

If one donor cannot proceed, another family member or potential donor may sometimes be evaluated.

However, the recipient’s urgency should not turn donor evaluation into a search for a hospital willing to overlook important risk.

Seeking a second medical opinion can be reasonable.

Trying to bypass a clear donor-safety concern is not.

How to be a kidney donor

How to be a kidney donor safely

Someone searching how to be a kidney donor should understand that the best strategy is not to try to “pass” the tests.

The correct goal is an honest evaluation.

A potential donor should:

• disclose their complete medical history,
• report all medications and supplements,
• mention kidney stones or urinary problems,
• disclose hypertension,
• disclose diabetes or prediabetes,
• report smoking and substance use honestly,
• discuss family kidney disease,
• provide requested previous medical records,
• and ask questions about anything they do not understand.

The transplant team cannot accurately estimate risk using incomplete information.

Honesty is part of donor safety.

Step 22: Final compatibility assessment

The donor’s health evaluation and the recipient’s transplant evaluation eventually come together.

Before surgery, the transplant center needs confidence that:

• the donor is medically suitable,
• the kidney anatomy is acceptable,
• the recipient remains eligible,
• the immune compatibility is acceptable,
• and the planned transplant pathway is authorized.

Some compatibility tests may be repeated before surgery.

This is important because the recipient’s immune profile can change.

A blood transfusion, pregnancy or another immune exposure can alter antibody levels.

Results obtained months earlier may therefore need updating.

Step 23: What happens if donor and recipient are incompatible?

A healthy donor does not automatically become useless simply because they cannot donate directly to the intended recipient.

Kidney paired donation can sometimes provide an alternative.

For example:

Donor A wants to donate to Recipient A but is incompatible.

Donor B wants to donate to Recipient B but is incompatible.

Testing may show that Donor A matches Recipient B and Donor B matches Recipient A.

A regulated exchange can allow both recipients to receive compatible kidneys.

Some systems also create larger chains involving several donor-recipient pairs.

Availability depends on national rules and transplant infrastructure.

Paired donation should take place through an authorized program rather than private arrangements between families.

Step 24: Recipient evaluation continues at the same time

The potential donor can be medically excellent while the recipient is temporarily unsuitable for transplantation.

Recipients need their own evaluation.

This may include:

• cardiac testing,
• vascular assessment,
• infection screening,
• cancer screening,
• blood-group testing,
• HLA and antibody assessment,
• dialysis history,
• and evaluation of the condition causing kidney failure.

The donor does not bypass recipient eligibility.

A healthy available donor cannot make transplantation safe if the recipient has a medical problem that creates an unacceptable surgical risk.

For the recipient-side pathway, see our Kidney Transplant(opens in a new tab) guide.

Step 25: Choosing a surgery date

Once the donor and recipient are approved and ready, living-donor transplantation can usually be scheduled.

This is one of the major logistical advantages of living donation.

The hospital coordinates:

• donor surgery,
• recipient surgery,
• transplant surgeons,
• anesthesia,
• operating rooms,
• blood bank support,
• laboratory services,
• and postoperative beds.

The donor and recipient can also plan:

• work leave,
• caregiver support,
• flights where relevant,
• accommodation,
• and postoperative arrangements.

Even after a date is set, surgery may still be postponed if an important new medical problem appears.

Examples include:

• infection,
• new recipient instability,
• donor illness,
• or an unexpected compatibility concern.

Safety is more important than preserving a scheduled date.

What happens before surgery?

The donor normally receives final preoperative instructions.

These may include:

• fasting,
• medication instructions,
• hospital arrival time,
• anesthesia review,
• and repeat laboratory testing.

Compatibility and infectious-disease testing may also be repeated.

The donor should disclose any new symptoms before surgery.

Even what appears to be a mild infection can be relevant when two major operations are about to take place.

The donor should also avoid independently stopping medications unless specifically instructed by the medical team.

Step 26: Kidney donation surgery

Donating a kidney: what happens during the operation?

Donating a kidney involves a surgical procedure called donor nephrectomy.

The operation is performed under general anesthesia.

Many modern transplant centers use laparoscopic or another minimally invasive technique.

The surgeon typically uses several small access incisions plus a larger incision through which the kidney can be removed safely.

During surgery, the kidney’s:

• artery,
• vein,
• and ureter

are carefully divided.

The kidney is then removed and transferred to the transplant team preparing it for the recipient.

The donor’s remaining kidney stays in place and begins adapting to the loss of the donated kidney.

The recipient operation is often coordinated closely with the donor operation to keep the time outside the body as short as practical.

Does the donated kidney immediately go into the recipient?

In a planned living-donor transplant, donor and recipient surgery are coordinated.

After removal, the kidney is prepared for transplantation.

The recipient surgeon then implants it, usually in the lower abdomen.

The kidney’s blood vessels are connected to the recipient’s circulation, and the ureter is connected to the urinary system.

Because living-donor surgery is planned, the kidney can often be transplanted after a relatively short preservation period.

That contributes to the strong immediate-function outcomes seen with many living-donor kidneys.

Step 27: Immediately after donor surgery

After nephrectomy, the donor goes to a postoperative recovery area.

The medical team monitors:

• blood pressure,
• pulse,
• oxygen level,
• pain,
• bleeding,
• urine output,
• nausea,
• and recovery from anesthesia.

IV fluids may be given.

A urinary catheter may remain temporarily.

Pain medication is provided.

Early movement is encouraged when medically appropriate.

The first goal is not to discharge the donor as quickly as possible.

The goal is to confirm stable recovery and identify complications early.

Step 28: Hospital recovery

Many uncomplicated kidney donors remain in hospital for only a few days.

The exact hospital stay depends on:

• surgical technique,
• pain control,
• mobility,
• bowel function,
• kidney function,
• hospital protocol,
• and complications.

Before discharge, the team usually wants confidence that the donor can:

• walk safely,
• eat and drink,
• urinate,
• control pain with appropriate medication,
• and understand postoperative instructions.

The donor should know:

• how to care for the wound,
• which medications to use,
• what symptoms require urgent contact,
• how much they may lift,
• when they may drive,
• and when follow-up will occur.

Hospital discharge means the donor no longer requires inpatient-level care.

It does not mean recovery is complete.

Step 29: Recovery at home

Recovery continues over several weeks.

Fatigue is common.

Abdominal soreness gradually decreases.

Walking becomes easier.

The donor progressively returns to normal activities.

Heavy lifting usually remains restricted longer than routine walking.

Driving should not resume until the donor can move comfortably, react safely and is not using medication that impairs alertness.

Return to work depends heavily on occupation.

Someone working remotely at a computer may return earlier than someone whose job involves:

• lifting,
• construction,
• warehouse work,
• nursing,
• or other physically demanding activity.

Our detailed [Kidney Donor Recovery: Week-by-Week Timeline] article should eventually be linked here once its published URL is available.

Step 30: Long-term follow-up after kidney donation

The kidney donation process does not end when the surgical wound heals.

Living donors should continue monitoring their remaining kidney.

Follow-up may include:

• blood pressure,
• serum creatinine,
• eGFR,
• urine albumin,
• weight,
• metabolic health,
• and general medical review.

The remaining kidney usually adapts and provides sufficient function for normal life.

However, the donor now has less renal reserve than before surgery.

Healthy habits therefore become important.

These include:

• maintaining healthy body weight,
• controlling blood pressure,
• preventing or controlling diabetes,
• exercising regularly,
• avoiding smoking,
• and reviewing potentially kidney-harming medication with healthcare professionals.

Our article on Life After Donating a Kidney: Living With One Kidney should provide the deeper long-term guide.

Kidney donation process timeline

There is no universal timeline that applies to every donor.

The process can be shorter when the donor is healthy, medical records are complete and compatibility is straightforward.

It can become considerably longer if additional tests are required.

International patients should avoid making irreversible travel plans based on the fastest possible timeline.

The transplant center should confirm when the case is ready for final evaluation and surgery planning.

What can delay the kidney donation process?

Abnormal kidney function

Unexpected kidney-function results may require repeat or confirmatory testing.

Protein or blood in the urine

These findings may require further nephrology investigation.

High blood pressure

Repeat measurements or ambulatory monitoring may be needed.

Diabetes or prediabetes

The team may need to assess long-term metabolic risk.

Kidney stones

Imaging and metabolic stone evaluation may be required.

Complex kidney anatomy

Additional surgical review may be necessary.

Immunological incompatibility

The pair may need another donor or a paired-donation pathway.

Recipient illness

The donor can be ready while the recipient is temporarily medically unfit for surgery.

Infection

Either person may require treatment and repeat testing before transplantation.

Documentation or regulatory review

This can be particularly important when donor and recipient are travelling internationally.

Psychosocial concerns

The evaluation may pause if the team needs more information about donor understanding, support or other psychosocial factors.

A delayed kidney donation process is not necessarily a failed process.

Sometimes additional testing or time is exactly what makes donation safer.

What if several people want to donate?

A recipient may have more than one person interested in donation.

The transplant program may decide which potential donor to evaluate first.

Factors can include:

• blood group,
• age,
• medical history,
• kidney health,
• relationship,
• compatibility,
• and practical considerations.

The “closest relative” is not necessarily the best donor.

For example, a sibling may share inherited kidney-disease risk, while a spouse may be genetically unrelated but medically healthier.

The process should remain a medical decision rather than a family competition.

Does the donor have to be a perfect match?

No.

Modern kidney transplantation does not require perfect HLA matching.

The donor-recipient combination needs an acceptable immunological risk profile.

A donor can differ substantially in HLA and still be suitable.

On the other hand, a genetically related donor can still be incompatible because of recipient antibodies.

That is why blood type, HLA typing and crossmatch testing each provide different information.

Can a female donate a kidney to a male?

Yes.

Sex difference alone does not prevent living kidney donation.

A woman can potentially donate to a male recipient, and a man can potentially donate to a female recipient.

The transplant team focuses on:

• donor health,
• kidney function,
• compatibility,
• anatomy,
• body size where relevant,
• and overall transplant suitability.

Sex alone is not a reason to reject a living donor.

Can a parent donate a kidney to a child?

Potentially, yes.

A parent may be evaluated for donation to an adult or pediatric child.

The parent still undergoes the complete donor evaluation.

Family relationship does not remove the need for:

• kidney-function testing,
• medical assessment,
• imaging,
• compatibility testing,
• and psychosocial evaluation.

If the recipient’s disease may have an inherited component, biological relatives sometimes need additional testing to ensure they do not carry the same kidney-disease risk.

Can a spouse donate a kidney?

Potentially, yes.

Spouses are common living kidney donors.

They may not share genetics, but genetic relationship is not required for successful transplantation.

The spouse must undergo the same donor-safety and compatibility testing as any other donor.

For international transplantation, legal documentation of the relationship may also be required.

Patients should confirm those requirements before booking travel.

Can a friend donate a kidney?

This depends on the country and regulatory framework.

From a medical perspective, a healthy friend may be able to donate.

From a legal perspective, some countries allow unrelated donation through standard pathways while others require additional ethics review or restrict eligible donor relationships.

A willing friend should therefore not be presented as an approved donor until the destination transplant center confirms the applicable pathway.

What about nondirected kidney donation?

Nondirected donation refers to someone who wishes to donate a kidney without identifying one specific recipient.

Some transplant systems allow this under regulated programs.

A nondirected donor may also initiate a kidney paired-donation chain.

This is different from the Organ Transplant Abroad pathway.

For international transplantation, our focus is on helping patients understand lawful treatment pathways when they already have an identified potential living donor.

The platform should never function as a donor marketplace.

The kidney donation process abroad

Kidney donation process abroad: what changes?

The medical principles remain the same when donor and recipient travel internationally.

The donor still needs:

• kidney-function testing,
• imaging,
• compatibility testing,
• infection screening,
• general medical evaluation,
• psychosocial assessment,
• and surgical approval.

The recipient still needs their own transplant evaluation.

What changes is the logistics.

Some preliminary records may be reviewed before travel.

This can help determine whether there is an obvious barrier before the family pays for flights and accommodation.

For example, the hospital may request:

• passports,
• relationship documents where applicable,
• donor blood group,
• donor kidney-function results,
• recipient diagnosis,
• dialysis records,
• medical history,
• and existing compatibility results.

However, remote record review should be treated as preliminary screening, not final approval.

The authorized transplant center may need to repeat important laboratory, compatibility, imaging or regulatory steps after arrival.

Kidney donation in Turkey

Patients considering a kidney transplant in Turkey(opens in a new tab) should understand that donor approval is part of a regulated transplant pathway.

The transplant center needs to confirm:

• donor medical suitability,
• recipient medical suitability,
• donor-recipient compatibility,
• relationship documentation,
• and any regulatory or ethics requirements that apply to the case.

A donor who appears medically suitable based on outside records is not automatically approved.

The transplant center makes the final decision according to the applicable national framework.

This is why potential donor records should be reviewed before travel whenever possible.

What documents should an international donor prepare?

The exact requirements vary by hospital and country.

The donor may be asked to prepare:

• passport or identity documents,
• proof of relationship where required,
• medical history,
• medication list,
• blood-group results,
• kidney-function tests,
• urinalysis,
• blood-pressure information,
• previous imaging,
• and relevant specialist reports.

The recipient may need:

• diagnosis of kidney failure,
• dialysis records,
• blood group,
• previous transplant history,
• antibody or HLA reports if available,
• cardiac investigations,
• infection history,
• and other medical records.

See our Documents to Prepare for Treatment Abroad(opens in a new tab) guide for the broader medical-travel documentation process.

Preliminary approval is not final donor approval

This is one of the most important concepts for patients arranging transplantation internationally.

A hospital may review:

• blood group,
• creatinine,
• age,
• medical history,
• and previous imaging

and say that the case appears appropriate for further donor evaluation.

That does not mean:

“Your donor has been fully approved and your transplant is guaranteed.”

Formal assessment may still discover:

• protein in the urine,
• hypertension,
• abnormal kidney anatomy,
• immunological incompatibility,
• infection,
• metabolic risk,
• or another issue.

International patients should therefore understand the difference between:

preliminary case acceptance

and

final donor clearance.

How long should donor and recipient stay abroad?

There is no universal stay length.

The necessary duration depends on:

• destination-country regulations,
• hospital protocol,
• how much evaluation was completed before travel,
• compatibility results,
• donor recovery,
• recipient recovery,
• and complications.

The recipient usually requires closer postoperative monitoring because the medical team needs to establish:

• transplanted kidney function,
• immunosuppressive medication,
• infection prevention,
• and rejection monitoring.

The donor may recover more quickly but still needs adequate postoperative follow-up and medical clearance before flying.

The end of a hotel reservation should never determine medical readiness for travel.

Donor follow-up after returning home

A donor travelling internationally should return home with a complete medical handover.

Useful records include:

• operative report,
• discharge summary,
• latest kidney-function tests,
• medication list,
• follow-up recommendations,
• contact details for the transplant center,
• and documentation of any complications.

The donor’s physician at home should know that one kidney has been donated.

Kidney function and blood pressure should continue to be monitored.

International donation should therefore be planned as a pathway extending beyond surgery.

How much does the kidney donation process cost?

The kidney itself is not a commercial product.

What generates medical costs are services such as:

• laboratory testing,
• donor imaging,
• specialist consultations,
• surgery,
• anesthesia,
• hospital care,
• recipient transplantation,
• medications,
• and follow-up.

Who pays these expenses varies by healthcare system.

International self-pay pathways can differ substantially from publicly funded or insured domestic transplantation.

Because prices change, this article should not hardcode a transplant package figure.

For current treatment-cost information, use our Kidney Transplant Surgery Cost(opens in a new tab) page.

How long does kidney donation surgery take?

Donor nephrectomy generally takes several hours, but the exact duration depends on:

• anatomy,
• surgical technique,
• previous abdominal surgery,
• and center practice.

A laparoscopic technique can reduce incision size and postoperative burden compared with traditional open surgery.

However, nephrectomy remains major surgery.

“Minimally invasive” does not mean “minor.”

The donor still requires anesthesia, hospital monitoring and several weeks of recovery.

Does kidney donation leave a scar?

Yes.

Donor nephrectomy requires incisions.

A laparoscopic operation generally leaves several smaller access scars and a larger extraction scar where the kidney is removed.

The appearance changes over time as the scars mature.

Some patients experience temporary or persistent numbness around an incision.

Your Day 13 article on Kidney Transplant and Donation Scars should cover scar appearance, incision position and healing in detail without overloading this process article.

What can stop donation after approval?

Even after a donor has been approved, surgery may be postponed or cancelled.

Possible reasons include:

• new infection,
• donor illness,
• recipient infection,
• new recipient cardiovascular instability,
• changed compatibility results,
• pregnancy,
• or another significant medical development.

This can be emotionally frustrating after months of preparation.

However, living-donor transplantation is elective and should occur under controlled circumstances.

If the situation changes, postponement can be the medically responsible decision.

Kidney donation process versus kidney transplant process

These two pathways overlap but are not the same.

The kidney donation process asks:

Can this person safely donate one kidney?

The kidney transplant process asks:

Can this recipient safely receive a transplanted kidney?

The donor pathway focuses on:

• donor health,
• long-term renal risk,
• anatomy,
• psychosocial readiness,
• and donor-recipient compatibility.

The recipient pathway focuses on:

• kidney-failure severity,
• transplant candidacy,
• cardiovascular health,
• immune risk,
• infection,
• surgical readiness,
• and post-transplant immunosuppression.

Both pathways meet at transplantation.

But they should remain clearly distinguished.

For the recipient process, see our Kidney Transplant(opens in a new tab) guide.

Questions a donor should ask during the process

A good living-donor program should welcome questions.

Donors should understand the process rather than simply be reassured that everything is “easy.”

Common myths about the kidney donation process

“If the blood types match, the donor is approved.”

False.

Blood group is only one component.

The donor still needs complete medical, kidney, imaging, compatibility and psychosocial evaluation.

“A family member automatically qualifies.”

False.

A parent, sibling, spouse or child can still be medically unsuitable for donation.

“If my creatinine is normal, my kidneys are definitely healthy enough.”

Not necessarily.

Creatinine is one part of kidney assessment.

Urine albumin, eGFR, anatomy, blood pressure and future disease risk also matter.

“Donor testing only involves blood tests.”

False.

Evaluation can include urine testing, imaging, cardiac assessment, physical examination, compatibility testing and psychosocial assessment.

“If the hospital says my records look good, surgery is guaranteed.”

False.

Preliminary record review is not final donor approval.

“Laparoscopic donation is a minor procedure.”

False.

It is still major surgery requiring general anesthesia and recovery.

“The donor is finished with medical care once discharged.”

False.

Postoperative and long-term kidney-health monitoring remain important.

“If one hospital declines me, I should simply find a hospital that will accept me.”

Not necessarily.

A second opinion can be appropriate for borderline situations, but a genuine donor-safety concern should not be treated as an obstacle to bypass.

A practical kidney donation checklist

Before donor evaluation

• Contact an authorized transplant program.
• Prepare your full medical history.
• List medications and supplements.
• Gather relevant medical reports.
• Be honest about previous kidney problems.
• Understand that screening does not equal approval.

During donor evaluation

• Complete blood tests.
• Complete urine tests.
• Have blood pressure assessed.
• Complete kidney-function testing.
• Undergo compatibility assessment.
• Complete kidney imaging.
• Complete cardiac or other specialist testing when required.
• Attend psychosocial assessment.
• Ask about your individual long-term risks.

Before surgery

• Confirm that donor and recipient are both medically cleared.
• Understand which kidney is planned for donation.
• Review the surgical technique.
• Follow medication instructions.
• Arrange time off work.
• Arrange practical support at home.
• Understand postoperative warning signs.
• Confirm the follow-up schedule.

After surgery

• Attend postoperative appointments.
• Follow wound-care instructions.
• Increase walking gradually.
• Respect lifting restrictions.
• Do not return to driving until medically appropriate.
• Obtain the operative and discharge records.
• Know your new kidney-function baseline.
• Continue long-term blood-pressure and kidney monitoring.

What makes a high-quality living donor program?

A strong donor program should be prepared to protect the donor even if that means the transplant cannot proceed.

The quality of a living-donor pathway should therefore be judged partly by how seriously it evaluates donor safety.

A comprehensive program should have access to:

• transplant nephrology,
• experienced donor surgeons,
• histocompatibility testing,
• advanced kidney imaging,
• anesthesia assessment,
• psychosocial support,
• postoperative care,
• and long-term donor follow-up.

Potential warning signs include:

• promising donor approval before testing,
• rushing the donor evaluation,
• minimizing the seriousness of nephrectomy,
• ignoring relevant medical history,
• discouraging questions,
• or treating the donor only as a means of helping the recipient.

Patients researching providers can review our Transplant Hospitals(opens in a new tab) section.

Our Partner Disclosure(opens in a new tab) also explains how hospital relationships are presented on the platform.

Ethical safeguards are part of the kidney donation process

Living kidney donation is possible because many healthy people can live well with one functioning kidney.

That medical fact does not remove the need for strong safeguards.

A legitimate process needs to establish that:

• the donor is medically suitable,
• the decision is informed,
• the transplant occurs through an authorized program,
• the donor’s health is independently protected,
• and the procedure follows the applicable legal and ethical framework.

This is particularly important in international transplantation.

Organ Transplant Abroad can help patients understand medical travel, hospital pathways and documentation.

The transplant center itself is responsible for formal donor assessment and transplant approval.

For more information about the platform’s principles, see our Ethical Sourcing Policy(opens in a new tab).

HowTo: kidney donation process step by step

Step 1 — Contact the transplant program

The potential donor contacts the transplant center and requests living-donor evaluation.

Step 2 — Complete initial screening

Provide medical, family and social history so the donor team can identify major risk factors.

Step 3 — Complete preliminary testing

Blood, urine, blood-pressure and kidney-function testing help determine whether the donor should continue.

Step 4 — Complete compatibility testing

The donor and recipient undergo blood-group, HLA, antibody and crossmatch assessment.

Step 5 — Attend full donor evaluation

The transplant team evaluates renal, cardiovascular, metabolic and general health.

Step 6 — Complete kidney imaging

Detailed imaging maps both kidneys and their arteries, veins and urinary anatomy.

Step 7 — Complete psychosocial evaluation

The donor discusses understanding, motivation, support and the consequences of donation.

Step 8 — Receive multidisciplinary review

The transplant team reviews all medical, surgical and psychosocial findings.

Step 9 — Complete final preoperative testing

If donation is proceeding, both donor and recipient complete any required final tests.

Step 10 — Undergo donor nephrectomy

One kidney is surgically removed and transferred to the recipient transplant team.

Step 11 — Recover after surgery

The donor completes hospital recovery and gradually returns to normal activities.

Step 12 — Continue long-term follow-up

Blood pressure and kidney function should continue to be monitored after recovery.

Final answer: how does the kidney donation process work?

The kidney donation process starts when a potential donor contacts an authorized transplant program and agrees to undergo evaluation.

The process normally begins with medical-history screening and basic laboratory testing.

If those results are suitable, the donor undergoes more detailed assessment of:

• kidney function,
• urine findings,
• blood pressure,
• metabolic health,
• infections,
• cardiovascular health,
• kidney anatomy,
• and donor-recipient compatibility.

The donor also receives psychosocial assessment because living kidney donation is not purely a surgical decision.

When the required testing is complete, the transplant program reviews whether donation is sufficiently safe.

If the donor is approved, the recipient remains medically eligible and the transplant pathway is authorized, surgery can be planned.

During donor nephrectomy, one kidney is removed under general anesthesia and transferred to the recipient transplant team.

After surgery, the donor spends several days in hospital in many uncomplicated cases and then continues recovery over the following weeks.

Long-term follow-up remains part of the process because the donor now lives with one kidney.

For patients considering transplantation outside their home country, the medical principles are the same but the logistics become more complex.

Medical reports can often be reviewed before travel, but preliminary review should never be confused with final donor approval.

The destination transplant center must complete or validate the necessary donor testing, compatibility assessment and regulatory review.

The safest way to think about the kidney donation process is therefore not:

“I want to give my kidney, so when can we schedule surgery?”

It is:

“I am willing to be evaluated as a potential kidney donor. The transplant team must now determine whether donation is safe and whether this donor-recipient pathway can appropriately proceed.”

The kidney donation process is much more than a blood-type test followed by surgery. A potential living donor first contacts the transplant program, completes health screening, undergoes kidney-function and compatibility testing, meets an independent donor team, receives imaging and psychosocial assessment, and is then reviewed for final approval. If donation is considered safe and the donor chooses to continue, the transplant is scheduled, the kidney is removed surgically, and the donor enters a structured recovery and long-term follow-up program. This guide explains each stage, including what changes when donor and recipient are arranging a lawful kidney transplant abroad.