If you have just been told you need chemotherapy, radiotherapy or major surgery, fertility may be the last thing on your mind. But some treatments can reduce or stop sperm production, sometimes permanently. Freezing sperm before treatment starts keeps the option of having a biological child later.
Sperm freezing (cryopreservation) is also used by men starting testosterone, men with a falling sperm count, and couples who want a back-up sample for the IVF day. Dr. Kalpesh Kapadia, a uro-andrologist in Ahmedabad, advises men on fertility preservation and arranges sperm freezing, including surgical sperm retrieval when the semen has no sperm.
In short: If you are about to start cancer treatment, ask about sperm freezing before the first dose. A sample is collected by masturbation, frozen in liquid nitrogen and stored for future use in IUI, IVF or ICSI. If there are no sperm in the semen, sperm can sometimes be retrieved surgically from the testis and frozen.
On this page
- Who should consider sperm freezing?
- Before cancer treatment: timing matters
- When there are no sperm in the semen
- How sperm freezing works
- Storage, consent and the law in India
- Using frozen sperm later
- What fertility preservation cannot do
- Frequently asked questions
- About Dr. Kalpesh Kapadia
- Book a consultation
Who should consider sperm freezing?
- Before cancer treatment: chemotherapy, radiotherapy to the pelvis or testes, or surgery for testicular cancer. Guidelines advise discussing fertility as early as possible, before treatment begins.
- Before other treatments that can affect fertility: some medicines for autoimmune disease, bone marrow transplant, or surgery on the testes, prostate or pelvis.
- Before starting testosterone: testosterone therapy switches off sperm production in most men. Freezing sperm first is sensible if you may want children.
- Falling sperm count: men whose count is dropping over time, for example with some genetic conditions or Klinefelter syndrome.
- Back-up for IVF: men who find it hard to produce a sample on the day, or who travel for work.
- Before vasectomy, if you are not completely sure you will not want more children.
Before cancer treatment: timing matters
Chemotherapy can damage sperm DNA from the first dose, so samples are best collected before treatment begins. An appointment can usually be arranged quickly so that cancer treatment is not delayed.
- Two or three samples, a day or two apart, are ideal if there is time. One sample is still worthwhile.
- The usual abstinence advice (2 to 7 days) is relaxed when time is short.
- Feeling unwell, or a low count from the illness itself, is common. Even a small number of sperm can be used with ICSI.
- Teenage boys who have gone through puberty can usually give a sample. For younger boys, freezing testicular tissue is still experimental and available only in research settings.
When there are no sperm in the semen
Some men find, at the time of freezing, that there are no sperm in the sample, or they cannot produce a sample. Options include:
- Sperm from the urine or by assisted ejaculation, for men with ejaculation problems.
- Surgical sperm retrieval (TESE or Micro-TESE) to find sperm in the testis and freeze them. Before cancer treatment this is sometimes called onco-TESE. It is planned with the oncology team so that it does not delay treatment.
- Sperm retrieved during IVF or Micro-TESE for azoospermia is also frozen, so that later IVF cycles may not need another operation.
How sperm freezing works
- Consultation: medical history, the reason for freezing, and plans for future use.
- Blood tests: infection screening (HIV, hepatitis B and C, syphilis etc.) is usually required by the storage bank before samples are stored.
- Sample collection: by masturbation into a sterile container, in a private room or as the bank advises.
- Analysis and freezing: the sample is checked, mixed with a protective solution, divided into small straws or vials, and frozen in liquid nitrogen at about −196°C.
- Consent and storage: you sign written consent covering storage, use and what should happen to the samples in the future.
Some sperm do not survive freezing and thawing, so movement is usually lower after thawing. This is one reason several samples may be stored, and why ICSI is often used with frozen sperm.
Storage, consent and the law in India
Sperm storage in India is governed by the Assisted Reproductive Technology (Regulation) Act, 2021. Samples can only be stored by registered ART banks and clinics, with your written informed consent.
- Your consent form records how long samples will be stored, who may use them, and what should happen to them if you die or no longer wish to store them. [VERIFY storage period and renewal terms under the Act and the bank’s policy]
- Stored sperm can be used only by you and your partner, as set out in your consent.
- You can withdraw consent and ask for samples to be discarded.
- Storage is renewed at intervals. Keep your contact details up to date with the bank.
Frozen sperm stored correctly can remain usable for many years. Births have been reported after decades of storage.
Using frozen sperm later
When you are ready, the sample is thawed in the IVF lab. Depending on the number of good sperm, it can be used for:
| Treatment | When it fits |
|---|---|
| IUI (intrauterine insemination) | Enough motile sperm after thawing, and no female factor needing IVF |
| IVF | Moderate sperm numbers |
| ICSI | Low numbers or poor movement after thawing; the usual choice with surgically retrieved sperm |
After cancer treatment, some men’s sperm production recovers on its own. A semen analysis after treatment shows whether natural conception is possible. The stored sample remains as a back-up.
What fertility preservation cannot do
Freezing sperm does not guarantee a future pregnancy. The chance depends on the quality and number of sperm stored, the female partner’s age and fertility, and the IVF method used. It is still the most reliable way to keep the option open before treatment that may harm fertility.
Frequently asked questions
When should I freeze sperm before cancer treatment?
Before the first dose of chemotherapy or radiotherapy, because treatment can damage sperm from the start. Ask your oncologist about fertility as soon as treatment is planned, and an appointment can usually be arranged quickly.
How many samples should I freeze?
Two or three samples are ideal if there is time, but even one sample is worthwhile. With ICSI, a small number of good sperm can be enough.
What if there are no sperm in my sample?
Sperm can sometimes be found in the testis by surgical retrieval (TESE or Micro-TESE) and frozen. Before cancer treatment this is planned with the oncology team so treatment is not delayed.
Should I freeze sperm before starting testosterone?
It is sensible if you may want children. Testosterone therapy switches off sperm production in most men, and recovery after stopping can take months and is not certain.
How long can frozen sperm be stored?
Sperm frozen in liquid nitrogen can stay usable for many years. In India, storage is governed by the ART (Regulation) Act 2021, and your consent form sets out the storage period and renewal.
Does freezing damage sperm?
Some sperm do not survive freezing and thawing, so movement is usually lower afterwards. That is why several samples may be stored and why ICSI is often used with frozen sperm.
Who can use my frozen sperm?
Only you and your partner, as recorded in your written consent. You can change or withdraw consent and ask for the samples to be discarded.
Can teenagers freeze sperm before cancer treatment?
Yes, boys who have gone through puberty can usually give a sample. For younger boys, freezing testicular tissue is still experimental and available only in research settings.
Is frozen sperm as good as fresh sperm for IVF?
Frozen sperm is widely used for IVF and ICSI. The chance of pregnancy depends mainly on the number and quality of sperm stored and on the female partner’s age and fertility.
Will my fertility come back after cancer treatment?
In some men sperm production recovers over months to years, depending on the treatment and dose. A semen analysis after treatment shows whether it has recovered, and stored sperm remains as a back-up.
About Dr. Kalpesh Kapadia
Dr. Kalpesh Kapadia is a uro-andrologist in Ahmedabad, practising since 2012, who evaluates and treats male infertility and advises on fertility preservation. He is a Mch,Uroandrology.. He works with oncologists and Pratham IVF teams to plan sperm freezing around treatment.
Book a consultation
- Pratham IVF & Urology Clinic, Vastrapur, Ahmedabad
- Phone / WhatsApp: +91 99984 78633
- Directions on Google Maps
- If your cancer treatment is about to start, tell us when you call so the appointment can be arranged in time.
Medically reviewed by Dr. Kalpesh Kapadia. Last reviewed: 23 October 2026. This page is general information, not a diagnosis.