Understanding TESA, PESA and Micro-TESE Procedures

When sperm are not found in a semen sample, the next question is often, “Is there still a way to retrieve sperm?”

In some men, the answer may be yes. Sperm can sometimes be collected directly from the male reproductive tract or testicular tissue and then used in assisted reproductive treatment such as ICSI.

Three procedures you may hear about are TESA, PESA and Micro-TESE. Although they all aim to retrieve sperm, they are performed in different ways and may be suitable for different fertility conditions.

Understanding how these procedures work can help couples have a more informed conversation with a fertility specialist.

What Is TESA?

TESA stands for Testicular Sperm Aspiration. It involves using a fine needle to aspirate sperm-containing material directly from the testicle.

TESA may be considered when sperm are absent from the semen but there is a possibility that sperm production is still occurring within the testicles.

One important point is that finding no sperm in semen does not automatically mean that the testicles produce no sperm. In some cases, sperm may be produced but unable to reach the semen because of a blockage.

When usable sperm are retrieved through TESA, they may be used for ICSI. In ICSI, an embryologist injects a selected sperm directly into an egg to assist fertilisation.

What Is PESA?

PESA means Percutaneous Epididymal Sperm Aspiration.

The epididymis is a small, coiled tube located behind each testicle. Sperm produced in the testicles move into the epididymis, where they mature and are stored.

During PESA, a fine needle is used to aspirate sperm from the epididymis through the skin.

This approach may be considered particularly when a blockage is preventing sperm from travelling normally into the semen.

So, while TESA collects material from the testicle, PESA targets the epididymis.

What Is Micro-TESE?

Micro-TESE, or microsurgical testicular sperm extraction, is a more specialised sperm-retrieval procedure.

Instead of using a needle aspiration technique alone, the testicular tissue is examined under surgical magnification. The doctor looks for areas that may contain sperm-producing tubules and carefully removes small samples of tissue for laboratory examination.

Micro-TESE may be considered in selected men with very limited sperm production, including some cases of non-obstructive azoospermia.

Because the underlying condition is different in every patient, Micro-TESE is not automatically the next step whenever semen analysis shows no sperm.

TESA vs PESA vs Micro-TESE: What Is the Difference?

The easiest way to understand the TESA PESA procedure comparison is to look at where the sperm are retrieved from and why the procedure might be considered.

The key difference is therefore not simply the name of the procedure. It is the location of sperm retrieval and the suspected reason sperm are absent from the semen.

Why Do Doctors Need to Find the Cause First?

This is one of the most important parts of male fertility evaluation.

A semen analysis can identify azoospermia, meaning sperm are not detected in the semen sample. But the result alone does not explain whether sperm production is normal, reduced, or absent.

Doctors may consider several factors, including:

• Medical and surgical history
• Physical examination
• Hormone levels
• Previous semen analysis results
• Possible reproductive tract blockage
• Testicular function
• Genetic factors in selected cases

This evaluation helps the fertility team understand whether the problem may be related to sperm production, sperm transport, or a combination of factors.

That is why TESA and PESA fertility treatment should not be viewed as interchangeable procedures. The approach needs to match the individual's clinical situation.

Can Retrieved Sperm Be Used in IVF?

In suitable cases, sperm obtained through TESA, PESA or Micro-TESE may be used as part of an IVF treatment cycle with ICSI.

However, sperm retrieval and pregnancy are two different stages.

Successfully retrieving sperm does not guarantee fertilisation, embryo development or pregnancy. Outcomes can depend on sperm quality, egg-related factors, embryo development and other reproductive factors affecting both partners.

A good treatment plan therefore considers the whole fertility picture, rather than focusing only on sperm retrieval.

What Should Couples Look for in a Fertility Centre?

For couples researching the best IVF centre in Madurai, it can be useful to look beyond whether a clinic offers sperm retrieval procedures.

Ask whether the centre provides:

• Proper male fertility evaluation
• Semen analysis and appropriate testing
• Specialist assessment for azoospermia
• Sperm retrieval when clinically indicated
• ICSI and embryology support
• Clear discussion of available alternatives
• A treatment plan based on the couple's individual situation

The same principle applies when comparing a best IVF centre in India. The goal should not be to find the most advanced procedure, but to find appropriate care based on an accurate diagnosis.

Dr. Aravind’s IVF Fertility &Amp; Pregnancy Centre

At Dr. Aravind’s IVF Fertility & Pregnancy Centre, male fertility concerns can be assessed as part of an overall fertility evaluation.

Where sperm retrieval is considered appropriate, procedures such as TESA or PESA may form part of the treatment pathway. The suitable approach depends on the underlying cause, test results, and the couple's reproductive goals.

For couples exploring fertility treatment, understanding the diagnosis before choosing a procedure can make the treatment journey clearer and more informed.

Frequently Asked Questions

1. What Is the Main Difference Between TESA and PESA?

TESA retrieves sperm-containing material from the testicle, while PESA retrieves sperm from the epididymis. The choice depends largely on the suspected cause of absent sperm in the semen.

2. When Might Micro-TESE Be Considered?

Micro-TESE may be considered for selected men with severely impaired sperm production, particularly in some cases of non-obstructive azoospermia. A specialist evaluation is needed to determine whether it is appropriate.

3. Are TESA, PESA and Micro-TESE the Same as IVF?

No. They are sperm-retrieval procedures, while IVF is an assisted reproductive treatment. Retrieved sperm may sometimes be used with ICSI as part of an IVF cycle.

4. Can a Man Have Sperm Production Even When Sperm Are Absent From Semen?

Yes. In some cases, sperm production may continue inside the testicles even though sperm cannot reach the semen because of a blockage. Other men may have reduced sperm production, which requires a different evaluation.

5. How Does a Fertility Specialist Decide Which Sperm Retrieval Procedure to Use?

The decision may involve semen analysis, hormone testing, physical examination, medical history, and the suspected cause of azoospermia. The specialist uses these findings to determine which retrieval method may be appropriate.

The Bottom Line

TESA, PESA and Micro-TESE are different approaches to sperm retrieval, and none can be considered universally better than the others.

The right choice depends on an important question: Why are sperm absent from the semen in the first place?

Once that question is investigated, a fertility specialist can discuss the available options and explain what may be appropriate for the individual couple.

Considering Male Fertility Treatment?

A detailed evaluation can help you understand the cause of the fertility concern and the treatment options that may be available.

Contact Us – Dr. Aravind’s IVF Fertility & Pregnancy Centre