Azoospermia: when no sperm are found in the sample

What the result means

Azoospermia means no sperm were found in a semen sample. Hearing this can be a real shock, especially when you feel completely well. It is natural to feel upset, confused or worried.

It is important to know that azoospermia is a finding, not a final answer. It tells doctors where to look next. For some men, sperm are still being made and can be found or retrieved. For others, there are other ways to build a family.

First, repeat the test

One sample is not enough to be sure. A doctor will usually ask for at least one more semen analysis. The laboratory may spin the sample in a machine (centrifuge) and examine the bottom of the tube carefully, because very small numbers of sperm can be missed otherwise.

Things that can affect a single result include a recent fever or illness, an incomplete collection, or a sample that was too old or too cold when it reached the lab.

Two main types, in plain terms

	Obstructive azoospermia	Non-obstructive azoospermia
What is happening	Sperm are being made, but a blockage stops them leaving	The testes are making very few or no sperm
Some causes	Vasectomy, past infection or surgery, the vas deferens missing from birth	Genetic conditions, undescended testes, past cancer treatment, testosterone or steroid use, low pituitary hormones
Typical clues	Hormone levels often normal, testes often normal in size	FSH often raised, testes may be smaller

These clues are a guide only. A specialist puts the whole picture together.

Tests that help find the cause

• Physical examination of the testes and tubes by a urologist or andrologist.
• Hormone blood tests, such as FSH, LH, testosterone and prolactin.
• Genetic tests, such as a chromosome test (karyotype), a test for small missing pieces of the Y chromosome, and sometimes a cystic fibrosis gene test. These can explain the cause and help with planning. If a genetic cause is found, genetic counselling is usually offered, as it may matter for any children.
• A scrotal ultrasound in some cases.
• A urine test after ejaculation, if the semen volume is low, to check whether sperm are going backwards into the bladder.

Good to know. Some causes can be treated. For example, when the pituitary gland is not sending enough signal, hormone treatment can sometimes restart sperm production. If testosterone or steroids are the cause, stopping them under medical guidance may allow sperm to return over time.

Surgical sperm retrieval

If sperm are being made, a urologist or andrologist may be able to collect them directly from the epididymis or the testis. There are several methods, from a fine needle to a small operation using a microscope. Which one is suitable depends on the cause.

Retrieved sperm are usually used with IVF and ICSI, where a single sperm is injected into each egg in a laboratory. Sperm can often be frozen for later use.

• In obstructive azoospermia, sperm can usually be found.
• In non-obstructive azoospermia, sperm may or may not be found, and it is hard to predict beforehand. A specialist should explain this honestly before any procedure.

For men who have had a vasectomy, a reversal operation may be another option to discuss.

Donor sperm

For some couples, and for single women and same-sex female couples, donor sperm is an option. It is a personal decision, and many people need time to think about it. Counselling can help.

In India, donor sperm must be obtained through an ART bank registered under the ART (Regulation) Act, 2021, and treatment must take place at a registered clinic. You can learn how to check a clinic's registration with our ART registry check.

The emotional side

Many men describe feeling a loss of identity, guilt or shame after this result, and some find it hard to talk about. Partners may feel grief too, or worry about saying the wrong thing. These feelings are common and understandable. Azoospermia is a medical condition. It is not a reflection of masculinity, and no one caused it.

It can help to go to appointments together, to decide together who you will tell (and who you won't), and to give each other time. Talking to a counsellor can help. For free, confidential mental-health support at any time, call Tele-MANAS on 14416 or 1-800-891-4416.

When to see a doctor

• If a semen analysis shows no sperm, ask for a repeat test and a referral to a urologist or andrologist. Our specialist checker can help you decide who to see.
• If you have had cancer treatment, or are about to start it, ask about sperm freezing.
• See a doctor promptly for a lump or swelling in a testis.
• For sudden, severe pain in a testis, call 112 or go to the nearest hospital straight away.
• If low mood, anxiety or sleep problems last more than a couple of weeks, talk to a doctor or counsellor. If you have thoughts of harming yourself, call 112 or go to the nearest hospital.