Vasectomy reversal vs sperm retrieval: choosing a route to a baby

Published 22 October 2026

If you want to conceive with your own sperm after a vasectomy, there are two main routes: a microsurgical reversal followed by trying naturally, or surgical sperm retrieval used with IVF and ICSI. The choice turns mainly on how long ago the vasectomy was done, your partner’s age and fertility, and how many children you hope to have. The British Association of Urological Surgeons (BAUS) reports that about 1 in 16 men who have had a vasectomy later ask for it to be reversed.

What is the difference between vasectomy reversal and sperm retrieval?

A vasectomy reversal rejoins the tubes that were cut, so sperm reach the semen again and you can try for a pregnancy naturally. Sperm retrieval leaves the vasectomy in place and collects sperm directly from the epididymis or testis, to fertilise your partner’s eggs in the laboratory by IVF with ICSI.

Our male fertility treatment page describes both procedures; this page is about choosing between them.

Vasectomy reversal vs sperm retrieval at a glance

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Which is better after a vasectomy: reversal or IVF?

Neither is better for every couple. BAUS lists four deciding factors: the time since your vasectomy, your partner’s age, how many children you want, and the costs. As a rule of thumb, BAUS says that if the vasectomy was less than 20 years ago, your partner is under 35 and you would like more than one child, reversal is the better approach.

The European Association of Urology (EAU) guidelines frame the decision around the female partner’s fertility. They recommend microsurgical reconstruction where she has good ovarian reserve (a healthy egg supply for her age), and sperm retrieval with ICSI where her ovarian reserve is limited, where the blockage cannot be repaired, or where the couple prefer to go straight to ICSI. They also recommend assessing her fertility alongside yours.

Where a reversal is realistic, we aim to restore natural fertility rather than turning to IVF or ICSI first, but we will say plainly when retrieval and ICSI make more sense for you.

Why does the time since your vasectomy matter?

Because back-pressure behind the vasectomy can, over the years, cause a second blockage in the epididymis that simply rejoining the vas cannot fix. The testes keep making sperm after a vasectomy, but with the exit blocked, sperm collect in the vas and the epididymis, the coiled tube behind each testis where sperm mature, and the pressure inside rises. The second blockage is sometimes called epididymal blowout.

During the operation the surgeon examines fluid from the testicular end of the vas. According to the EAU guidelines, no sperm in that fluid, especially if it is thick and “toothpaste-like”, suggests a secondary epididymal blockage, and the vas may need joining directly to the epididymis instead (a vasoepididymostomy). BAUS notes that this more complex join gives poorer results than rejoining the vas ends.

In a US series of 1,229 reversals, the need for a join to the epididymis on at least one side rose by about 3% for each year since vasectomy up to around 22 years, then levelled off at 72% for vasectomies 24 to 38 years old. Motile sperm counts after reversal also fell as the interval lengthened.

When the cause is a blockage, as after a vasectomy, BAUS puts the chance of finding sperm at retrieval close to 100%.

What is the success rate of vasectomy reversal?

BAUS puts the chance of sperm returning at 97% when the vasectomy was less than 3 years ago, falling to 40% at 20 years or more; pregnancy rates are lower at every interval. “Success” can mean sperm returning (patency) or a pregnancy, which also depends on the female partner’s age and fertility, and BAUS is explicit that patency does not guarantee a natural pregnancy; some couples still need assisted conception after a technically successful reversal. BAUS gives these figures:

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Across published series, the EAU guidelines report average patency of 90–97% and pregnancy of 52–73% after microsurgical reversal. These come from surgical case series, not head-to-head trials of the two routes, so treat them as a guide rather than a prediction.

BAUS gives an average success rate for assisted conception of 30% to 40%, which also depends on the female partner’s age and health. BAUS does not say how the two sets of figures were measured, and pregnancy rates can be reported per cycle, per embryo transfer or over a period of time, so they are not directly comparable.

How does your partner’s age change the decision?

It is often the deciding factor, because it sets how much time you can afford. The NHS lists age among the factors that affect the chance of having a baby with IVF.

A reversal means waiting months for sperm to return before you can start trying. If your partner is younger and has no fertility problems of her own, that wait is usually affordable. If she is older, those months matter; if tests show a reduced egg supply, the EAU guidelines favour sperm retrieval with ICSI. If she has a condition that would need IVF anyway, such as blocked fallopian tubes, a reversal adds an operation without removing the need for IVF. If she has not had fertility tests, arrange them before deciding.

What if you want more than one child?

A successful reversal has a clear advantage here: once sperm are back, each later pregnancy can be attempted naturally, without another procedure for either of you. With retrieval, each further child usually means more IVF treatment for your partner, although frozen sperm or frozen embryos may avoid a second retrieval. The EAU guidelines note that one microsurgical epididymal sperm aspiration (MESA, an open operation, not the PESA or TESA needle techniques below) usually provides enough sperm for several ICSI cycles; your consultant can advise how much a needle retrieval is likely to yield for storage.

Two caveats apply to reversal. A join can block again after sperm have returned: BAUS puts this risk at around 1 in 20 each year, and the EAU guidelines report late failure of 0–12% after a vas-to-vas join and 1–50% after a join to the epididymis. And because a reversal restores fertility, you will need contraception again once your family is complete.

What does each option involve for you and your partner?

Vasectomy reversal

A reversal is done through one or two scrotal incisions using a microscope, normally under general anaesthetic. Swelling, bruising and discomfort for several days are common. BAUS lists bleeding needing further surgery (between 1 in 10 and 1 in 50), ongoing pain or a tender nodule at the join (about 1 in 20) and infection needing antibiotics (between 1 in 50 and 1 in 250). Avoid heavy lifting for the first few weeks.

Sperm retrieval with IVF and ICSI

For you, sperm are drawn with a needle from the epididymis (percutaneous epididymal sperm aspiration, PESA) or the testis (testicular sperm aspiration, TESA), usually under local anaesthetic, sometimes with mild sedation. Mild bruising and swelling are common; chronic pain and shrinkage of the testis are uncommon. BAUS also lists worsening of the blockage in the vas or epididymis as an uncommon risk (between 1 in 50 and 1 in 250), which is worth discussing if you might want a reversal later. You need blood tests for HIV and hepatitis B and C in the three months before retrieval so that any sperm found can be frozen, plus storage consent forms.

For your partner, an IVF cycle is the larger undertaking, with its own risks; our honest IVF advice page explains what a cycle involves and when ICSI is genuinely needed. Surgically retrieved sperm are used with ICSI, where a single sperm is injected into each egg.

How quickly could you get pregnant with each option?

Retrieval with ICSI usually reaches a first attempt sooner; reversal is slower to start but then allows natural attempts every month. After a vas-to-vas join, the EAU guidelines put the average time for sperm to reappear at 1.7 to 4.3 months. BAUS advises allowing three to six months, sometimes up to a year; after a join to the epididymis, the EAU guidelines note it may take 3 to 18 months to open. Repeat semen tests track the return; our guide to semen analysis results explains those reports.

BAUS suggests asking your surgeon for a realistic timescale and setting yourself a point at which you would move on to assisted conception if sperm have not returned; it makes sense to discuss this before surgery. With retrieval, timing follows the IVF cycle instead.

How are the costs of each option structured?

The costs build up differently. Procedure fees are quoted separately, so we do not list them here.

• Vasectomy reversal is usually one operation, paid once. If it works, later attempts need no further procedure; if it fails, retrieval and IVF costs may follow.
• Sperm retrieval with ICSI combines the retrieval with the cost of each IVF/ICSI cycle, plus storage of frozen sperm or embryos, so the total grows with each cycle and each child.

The NHS says vasectomy reversal is not usually available on the NHS, and BAUS states that private medical insurers do not cover it, so most UK reversals are self-funded. NHS-funded IVF is decided by local integrated care boards, and the NHS notes some may only offer it if you do not already have children, so check your local criteria before relying on it. Consultation fees are on our fees and insurance page.

Do sperm granulomas affect a vasectomy reversal?

Studies have reached conflicting conclusions, and one large study suggests granulomas make little difference to sperm counts after reversal. The NHS describes a granuloma as a small lump on the scrotum made up of sperm, usually harmless. It forms when sperm leak from the cut end of the vas under back-pressure, and it has been suggested that the leak keeps pressure lower and so helps a later reversal. In that single-centre study of 1,550 men having reversal, granulomas were linked with more favourable vas fluid at surgery but not with higher motile sperm counts afterwards, which the authors suggested means patency is similar with or without a granuloma in skilled hands.

A painful granuloma is worth raising at your consultation. If you have scrotal pain now, our page on testicular pain covers the causes.

Can you combine reversal and sperm retrieval?

Yes. The EAU guidelines note that sperm can be retrieved during a reversal and frozen for possible ICSI later, a fallback if sperm do not return or the join blocks again, and they advise this when a join to the epididymis is needed or the blockage cannot be repaired. Your consultant can advise whether this makes sense for you; it needs planning before surgery, because freezing needs the blood tests and consents described above. If a reversal fails, retrieval and ICSI remain available, and if sperm return in low numbers, your partner may still need assisted conception using your ejaculated sperm.

When should you get urgent advice?

• After a reversal or retrieval, contact your surgical team if bruising, swelling or pain gets worse day by day, or you develop a high temperature or discharge from the wound. Out of hours, call NHS 111.
• Sudden, severe pain in a testicle can be testicular torsion, a surgical emergency. Go to A&E immediately or call 999 rather than waiting for a clinic appointment, and do not drive yourself.
• During IVF, your partner should contact her fertility clinic or NHS 111 as soon as possible for abdominal pain and bloating, feeling or being sick, feeling faint, coughing up blood, vaginal bleeding or a brown watery discharge, or pain when opening her bowels or passing urine. If abdominal pain is severe, vomiting persists or her abdomen swells rapidly, she should contact the treating unit immediately or go to A&E.
• Call 999 or go to A&E for difficulty breathing, pain in the chest or upper back, being very thirsty and passing less urine than usual, swelling in any part of the body, abdominal pain low down on one side, or pain in the tip of the shoulder, as these can be signs of ovarian hyperstimulation syndrome or an ectopic pregnancy. She should not drive herself to A&E.

Talking it through with a consultant

The right answer depends on your examination findings and your partner’s results as much as on any table. At The Andrology Centre you can discuss both routes with Mr Maj Shabbir or Ms Raveen Kaur Sandher, Consultant Urological Surgeons whose practice covers male infertility and microsurgery. Both practise at Guy’s & St Thomas’, named by Newsweek in 2025 as the number one urology service in Europe. Where IVF or ICSI is needed, we work with licensed fertility units.

Bring the date of your vasectomy and any fertility results your partner already has. Self-funding patients do not need a GP referral. We see patients at HCA at The Shard, Canary Wharf and Guy’s Hospital; call +44 7889 318584, Monday to Friday, 8am to 4pm, or use our contact page. See your first urology appointment for what to expect.

Frequently asked questions

References and further reading