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Fertility preservation before cancer treatment

Urgently collecting and freezing eggs, sperm, embryos or reproductive tissue before cancer treatment that may harm fertility, so you may still have a chance of a child later.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

  • It freezes eggs, sperm, embryos or tissue before cancer treatment that may harm fertility, to protect your chance of a child later.
  • It is time-critical and must be arranged urgently with your oncology team, so it does not dangerously delay your cancer treatment.
  • It protects options but cannot guarantee a future baby; success later depends on what is frozen, your age and the treatment used.
  • It is often funded on the NHS or HSC as part of cancer care, but this is not automatic and eligibility varies across the UK, so confirm it with your team; storage follows HFEA rules, with consent and long-term storage limits.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeUrgent fertility preservation before cancer therapy
AnaestheticNot needed for a sperm sample; egg collection uses sedation; tissue freezing is a small operation
How long it takesSperm freezing is quick; egg or embryo freezing usually needs about 2 weeks
Hospital stayOutpatient or day case, depending on the method
Time off workVaries; this is fitted in urgently around your cancer treatment
When you'll see resultsWhat is frozen is confirmed within days; whether it leads to a baby is only known years later
On the NHS?Often funded on the NHS or HSC as part of cancer care, but rules vary across the UK - ask your team to confirm your eligibility

A general guide. Your specialist will give you advice for your situation.

Best fit

Protects your chance of a genetically related child if cancer treatment harms your fertility.

Pause if

When cancer treatment is too urgent to allow safe preservation, so treatment must come first.

Main recovery point

No recovery is needed; you can carry on with your day and move on to cancer treatment without delay.

Good aftercare

Joint working between the fertility clinic and oncology team, with clear, agreed timing.

Sperm freezing

No recovery is needed; you can carry on with your day and move on to cancer treatment without delay.

Egg/embryo: stimulation (about 2 weeks)

Daily injections with scans. You may feel bloated and emotional. This phase is timed carefully so as not to...

Egg collection day

A day-case procedure with sedation. Expect cramping and light bleeding afterwards, and arrange for someone to take...

After collection

Watch for OHSS symptoms for a few days. Once you have recovered, your cancer treatment can usually begin as...

Medical line illustration of egg freezing fertility preservation for Fertility preservation before cancer treatment.
Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is fertility preservation before cancer treatment?

Some cancer treatments, such as chemotherapy, radiotherapy and certain surgeries, can reduce or end your ability to have children. Fertility preservation means collecting and freezing eggs, sperm, embryos or reproductive tissue before that treatment starts, so you may still have a chance of a genetically related child afterwards.

The right option depends on whether you produce sperm or eggs, your age, whether you have a partner, the type of cancer, and how soon treatment must begin. For people who produce sperm, freezing a sample is quick and simple. For people who produce eggs, freezing eggs or embryos usually needs about two weeks of hormone injections and a minor egg-collection procedure. Where there is not enough time, or for children before puberty, freezing ovarian or testicular tissue may be possible in specialist centres.

This is time-critical. It must be arranged urgently and worked out together with your cancer (oncology) team, so that protecting your fertility does not dangerously delay treatment that you need. Sometimes there is not enough time, and your cancer treatment rightly comes first.

Freezing protects options; it cannot promise a future baby. In the UK, storage and use are regulated by the HFEA (Human Fertilisation and Embryology Authority). This care is often funded on the NHS (or HSC in Northern Ireland) when fertility is at risk, but it is not automatic and eligibility varies across England, Scotland, Wales and Northern Ireland - and between local areas - so ask your team to confirm what applies to you.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Sperm freezing
Quick and simple: a sample is produced, checked and frozen. Usually the first choice for men and adolescent boys, as it rarely delays cancer treatment. More than one sample may be banked.
Egg freezing
About two weeks of hormone injections help several eggs grow, which are then collected under sedation and frozen, usually by a fast-freezing method (vitrification). Suits people without a partner or who prefer not to freeze embryos.
Embryo freezing
Eggs are collected as for egg freezing, then fertilised with a partner's or donor's sperm, and the embryos are frozen. Needs decisions about consent and whose sperm is used.
Ovarian or testicular tissue freezing
A small operation removes and freezes reproductive tissue. May be used when there is no time for egg collection, or for children before puberty, in specialist centres.

Sperm vs egg or embryo freezing before cancer treatment

Sperm freezingEgg / embryo freezing
Time neededUsually same dayUsually about 2 weeks
Hormone injectionsNoYes
ProcedureA sample, no surgeryEgg collection under sedation
Risk of delaying cancer careLowNeeds careful timing

Because egg and embryo freezing take about two weeks, the timing must be agreed with your oncology team. Sperm freezing rarely causes delay. Tissue freezing may be an option when there is no time for egg collection.

Preparing for your treatment

  • Ask your cancer team early, ideally as soon as treatment is planned, whether your treatment may affect fertility and whether preservation is possible.
  • Expect an urgent referral to a fertility clinic, with the timing agreed jointly with your oncology team.
  • Be screened for infections such as HIV and hepatitis, which is needed before freezing and storage.
  • Discuss which option fits your situation, your age, whether you have a partner, and how soon treatment must start.
  • If freezing embryos, talk through whose sperm is used and the consent that involves, including what happens to the embryos in future.
  • Complete the HFEA consent forms, including how your eggs, sperm, embryos or tissue may be used and what happens if you die or lose capacity.
  • Ask for emotional support or counselling, as making these decisions quickly at a frightening time is very hard.

What happens

What happens depends on the method and how much time there is. For sperm freezing, you produce a sample, which is checked and frozen, often on the same day; more than one sample may be banked if time allows.

For egg or embryo freezing, you usually have about two weeks of daily hormone injections to help several eggs grow, with scans to check progress. The eggs are then collected with a fine needle passed through the vaginal wall under sedation, a day-case procedure. The eggs are either frozen (egg freezing) or fertilised with a partner's or donor's sperm and frozen as embryos (embryo freezing). Some clinics can start this at different points in the cycle to save time.

If there is not enough time for egg collection, or for a child before puberty, a small operation to remove and freeze ovarian or testicular tissue may be possible in a specialist centre.

Throughout, the plan is worked out with your oncology team so that preserving fertility does not dangerously delay your cancer treatment. The frozen material is then stored under HFEA rules until you are well and ready to consider treatment.

Is this treatment right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

  • When cancer treatment is too urgent to allow safe preservation, so treatment must come first.
  • When the planned cancer treatment carries little or no meaningful risk to fertility.
  • When hormone stimulation would be unsafe for a particular hormone-sensitive cancer and no adapted approach is suitable.
  • When you decide, after support and counselling, that preservation is not right for you.

Delay or rearrange if…

  • Cancer treatment cannot safely wait the time some methods need.
  • Infection screening is incomplete (though urgency may change how this is handled).
  • You have not yet had the information and consent discussion you need to decide.
  • Embryo freezing is being considered but consent or whose-sperm decisions are not yet clear.
  • You feel too overwhelmed to decide and need brief, urgent support first.

Alternatives to discuss

  • Proceeding with cancer treatment without preservation, accepting the fertility risk, after counselling.
  • Choosing a quicker method, such as sperm freezing or tissue freezing, when time is short.
  • Using donor eggs, sperm or embryos in the future if your own cannot be preserved or used.
  • Adoption or fostering as a future route to parenthood.
  • Medicines that may help protect the ovaries in some situations, on specialist advice.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Benefits

  • Protects your chance of a genetically related child if cancer treatment harms your fertility.
  • Lets you proceed with important cancer treatment while keeping future options open.
  • Offers more than one route (sperm, egg, embryo or tissue) depending on your situation.
  • Can give a sense of hope and control at a very difficult time.
  • Sperm freezing is quick and rarely delays the start of cancer treatment.

Risks & complications

More common
  • Emotional strain of making big decisions quickly during a cancer diagnosis
  • For egg or embryo freezing, side effects of hormone medicines such as bloating and mood changes
  • Some eggs, embryos or sperm not surviving freezing and thawing
  • The worry that there may not be enough time before cancer treatment must start
Less common
  • Mild to moderate ovarian hyperstimulation (OHSS) after egg collection
  • A short delay to cancer treatment to allow egg or embryo freezing, where it is judged safe
  • Collecting fewer eggs than hoped, especially with little time or in older patients
  • Complications of the small operation for ovarian or testicular tissue freezing
Rare but serious
  • Severe OHSS, which can be serious and occasionally needs hospital treatment
  • Bleeding, infection or damage from the egg-collection needle or tissue operation
  • A theoretical concern about hormone stimulation in certain hormone-sensitive cancers, which specialists plan around
  • Stored material being lost through a storage or equipment failure

The central balance is between protecting your fertility and not dangerously delaying cancer treatment, and your oncology and fertility teams should decide this together. For egg or embryo freezing, the main medical risks are OHSS and the small risks of egg collection; for some hormone-sensitive cancers, specialists tailor the approach. Above all, preservation protects options and cannot guarantee a future baby. Ask both teams what is realistic and safe for you.

Published figures to discuss

Outcomes vary widely and cannot be promised. The chance of a future baby depends on the method, your age at freezing, how much material survives thawing, the cancer treatment you have, and whether your own fertility recovers. Because so much is individual and decided years later, this guide does not quote success percentages; your specialists can give a realistic, personal picture.

FigureReported rangeHow to interpret itSource / confidence
Delay to cancer treatmentTime-critical and individualEgg or embryo freezing usually takes stimulation time; sperm freezing can often be arranged faster. Oncology must agree the window.Guide sourcesClinical context
Future live birth from stored materialNot guaranteed and strongly age- and treatment-dependentStored eggs, sperm or embryos preserve a chance, not a promise. Later success depends on survival after thaw and treatment context.Guide sourcesClinical context
OHSS during urgent stimulationUncommon with modern antagonist protocols, but possibleCancer patients need particular attention to thrombotic risk, oestrogen-sensitive cancers and urgent symptoms.NICE NG257 — Fertility problems: assessment and treatment (replaces CG156)nice.org.ukSource-linked context
Consent and storage decisionsClinically importantConsent should cover storage length, death/incapacity, relationship breakdown, embryo use and what happens if fees or contact lapse.NICE NG257 — Fertility problems: assessment and treatment (replaces CG156)nice.org.ukSource-linked context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

Recovery depends on the method. Sperm freezing needs none. Egg or embryo freezing involves a short recovery after egg collection, much like IVF. Tissue freezing is a small operation with its own recovery. All of this is fitted urgently around your cancer treatment.

Sperm freezing
No recovery is needed; you can carry on with your day and move on to cancer treatment without delay.
Egg/embryo: stimulation (about 2 weeks)
Daily injections with scans. You may feel bloated and emotional. This phase is timed carefully so as not to dangerously delay your cancer treatment.
Egg collection day
A day-case procedure with sedation. Expect cramping and light bleeding afterwards, and arrange for someone to take you home.
After collection
Watch for OHSS symptoms for a few days. Once you have recovered, your cancer treatment can usually begin as planned with your oncology team.
Tissue freezing
A small operation with a short recovery; your team will advise on wound care and when cancer treatment can start.
What's normal — and not a worry
  • No after-effects from sperm freezing
  • Bloating, tender ovaries and tiredness during and after egg-freezing stimulation
  • Cramping and light bleeding for a day or two after egg collection
  • Soreness after a tissue-freezing operation
  • Strong, mixed emotions about cancer and fertility at the same time

Aftercare

  • After egg collection, watch for OHSS symptoms and contact the clinic urgently if they appear.
  • Use simple pain relief for cramping after egg collection if the clinic agrees.
  • Follow wound-care advice if you had a tissue-freezing operation.
  • Confirm with both teams when your cancer treatment will start now preservation is done.
  • Complete and keep a copy of your HFEA consent forms, including who may use the stored material.
  • Keep your contact details up to date so stored material is not lost and renewal reminders reach you.
  • Use the counselling and support offered, during and after cancer treatment.
Before your treatment
  • Fertility risk discussed with the oncology team
  • Urgent fertility referral made and timing agreed
  • Infection screening completed
  • HFEA consent forms signed and a copy kept
  • Decision recorded about who may use the stored material
  • Start date for cancer treatment confirmed with both teams
  • Counselling and support contacts saved

⚠ Get urgent help if…

  • Severe or rapidly worsening bloating or tummy swelling after egg collection
  • Breathlessness or difficulty breathing after egg collection
  • Severe tummy or pelvic pain not eased by simple painkillers
  • Passing much less urine than usual, or feeling very thirsty and unwell
  • Fever, heavy bleeding, or signs of infection after egg collection or a tissue operation
  • Feeling unable to cope emotionally, or having thoughts of harming yourself
  • Any concern that fertility steps are delaying urgent cancer treatment (raise this at once)

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your specialist gives you.

Results & realistic expectations

A 'good' result is safely freezing eggs, sperm, embryos or tissue before cancer treatment, without dangerously delaying that treatment. What is frozen is confirmed within days.

Whether it leads to a baby is only known years later, when you are well and ready to try, and it can never be guaranteed. Success depends on what was frozen, how much survives thawing, your age at the time of freezing, the treatment used later, and your health after cancer. The aim is to keep a realistic chance open, not to promise a child, and your team should be honest and supportive about this.

How long it lasts

Frozen eggs, sperm, embryos and tissue can be stored for up to 55 years in the UK, with consent renewed every 10 years for storage to continue lawfully. This means your stored material can usually wait until you have finished cancer treatment and are well enough to consider a family. Keeping your contact and consent details up to date is essential so it is not lost. Your own fertility after cancer treatment may or may not recover, which is why preservation beforehand can matter.

Related tests, treatments or support

Fertility preservation before cancer treatment brings together oncology and fertility care, and uses the same techniques as sperm freezing, egg freezing, embryo freezing and (where there is no sperm in the semen) surgical sperm retrieval. Later, the stored material is used with treatment such as IUI, IVF or ICSI. Good care joins these threads with your cancer team so timing and safety are right.

Follow-up & long-term care

After preservation, your main focus moves to cancer treatment with your oncology team. The fertility clinic stores your material and should keep you informed about consent renewal and storage. When you have recovered and are ready, a fertility clinic will review what is stored, check whether your own fertility has returned, and plan any treatment. Renewal reminders should come from the clinic, but keeping your details current is your safeguard.

  • Renew your consent every 10 years so storage can lawfully continue.
  • Keep your contact details up to date with the clinic so reminders reach you.
  • When you are well and ready, ask a fertility clinic to review your stored material and your current fertility.
  • Update your consent if your circumstances or wishes change.
  • Keep using emotional support, as fertility after cancer can be a difficult, ongoing issue.

Repeat, follow-on and what comes next

  • More than one sample, or more than one egg-collection cycle, is sometimes possible if time allows.
  • Some eggs, embryos or sperm do not survive thawing, which is expected.
  • Your own fertility may or may not recover after cancer treatment, which affects whether you need the stored material.
  • Whether stored material leads to a baby is decided at the later treatment stage, often years later.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

  • Joint working between the fertility clinic and oncology team, with clear, agreed timing.
  • Honest, supportive information about what preservation can and cannot offer.
  • Counselling available during and after cancer treatment.
  • Reliable storage with clear consent, renewal reminders and up-to-date contact details.
  • A clear route back to a fertility clinic when you are well and ready to consider treatment.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

  • Which method is used (sperm, egg, embryo or tissue freezing).
  • For egg or embryo freezing, the hormone medicines and the egg-collection procedure.
  • Laboratory work, including fertilisation for embryos and the freezing technique.
  • Screening tests before freezing.
  • Ongoing yearly storage fees.
  • Counselling and joint care with the oncology team.
  • Later treatment (IUI, IVF or ICSI), which is a separate cost when you use the stored material.
Make sure your written quote includes
  • Whether this care is NHS-funded for you, and what (if anything) is charged.
  • What any freezing fee covers for your chosen method.
  • The cost of hormone medicines and egg collection for egg or embryo freezing.
  • Yearly storage fees and how consent renewal works.
  • Screening test costs.
  • What happens to fees and stored material if your situation changes.
  • That later treatment, when you use the stored material, is a separate cost.

On the NHS? Fertility preservation is often funded on the NHS (or HSC in Northern Ireland) as part of cancer care when treatment may harm fertility, but this is not automatic. Funding and eligibility are decided by NHS/HSC commissioners, and the rules differ across England, Scotland, Wales and Northern Ireland - and between local areas - and can change over time. NICE guidance sets out the clinical recommendations for England but does not by itself decide what is funded. Ask your cancer team or fertility clinic to confirm what you are eligible for; some people choose or need to arrange aspects privately.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

  • Check the specialist is on the GMC Specialist Register for this area.
  • Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
  • You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
  • Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
  • You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Questions to ask your medical professional

Take this to your consultation. A good specialist will welcome every one of these.

  • Is my planned cancer treatment likely to affect my fertility, and how much time do we have?
  • Which preservation option is safest for me without dangerously delaying my cancer treatment?
  • How will my oncology and fertility teams work together on the timing?
  • What is realistic to expect from what we can freeze in the time available?
  • For my type of cancer, is hormone stimulation safe, or do you adjust the approach?
  • How is the stored material kept, and what consent and storage rules apply?
  • Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
  • Will you be the specialist who carries out my treatment, and who looks after me afterwards?
  • What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
  • What does a realistic result look like — and what can this treatment not achieve?
  • What are my options, including waiting, doing nothing for now, or choosing a different approach?
  • Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
  • What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Will preserving my fertility delay my cancer treatment?
Sperm freezing is quick and rarely causes delay. Egg or embryo freezing usually needs about two weeks, so the timing is agreed jointly with your oncology team. If there is not enough time, your cancer treatment comes first, and tissue freezing may be an option.
Does it guarantee I'll be able to have a baby?
No. It protects your options, but a future baby depends on what was frozen, how much survives thawing, your age, the later treatment and your health after cancer. The aim is to keep a realistic chance open, not to promise a child.
Is it available on the NHS?
Often yes, as part of cancer care when your treatment may harm your fertility, but it is not automatic. Funding and eligibility are decided by NHS or HSC commissioners and vary across England, Scotland, Wales and Northern Ireland, and between local areas, so the rules where you live may differ and can change. NICE guidance describes the clinical recommendations for England but does not by itself decide what is funded. Ask your cancer team or fertility clinic to confirm what you are eligible for, and to refer you urgently, as time matters.
What if I'm a child or haven't been through puberty?
For children before puberty, freezing ovarian or testicular tissue in a specialist centre may be possible. The team will explain options and involve parents or carers in the decisions.
What are my options if there isn't much time?
Sperm freezing is fast. For eggs, some clinics can start stimulation at different points in the cycle to save time, and tissue freezing may avoid the two-week wait. Your two teams will find the safest option for your situation.
Should I freeze eggs or embryos?
Embryos need sperm (a partner's or a donor's) and joint consent, and decisions about their future. Eggs keep your options open if you do not have a partner or prefer not to create embryos now. Your clinic and counsellor can help you decide.

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NICE NG257 — Fertility problems: assessment and treatment (replaces CG156) Macmillan Cancer Support — Fertility preservation HFEA — Fertility preservation HFEA — Consent to treatment and storage Cancer Research UK — Preserving fertility NHS inform — Infertility and fertility access (Scotland) NHS Wales — Specialist fertility services commissioning policy (CP38) Northern Ireland Regional Fertility Centre (Belfast HSC Trust)

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.

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