SurgicalSperm
Retrieval
Azoospermia falls into two categories: obstructive, where sperm production is normal but blocked, and non-obstructive, where the testicles produce very little. A hormonal and genetic workup tells us which — and which procedure fits your case. Retrieved sperm is always used with ICSI, either timed with your partner's egg collection or frozen in advance. 40–60% Micro TESE Yield. 3 Techniques Offered.
Understanding Surgical Sperm Retrieval
Azoospermia means no sperm in the ejaculate at all. It affects roughly one per cent of men, and around ten to fifteen per cent of men investigated for infertility. For most it arrives as a complete shock, because there are no symptoms and sexual function is usually entirely normal. The diagnosis should never rest on one sample — it needs at least two properly centrifuged semen analyses.
The decisive question is whether the cause is obstructive or non-obstructive, because these are different problems with different answers. In obstructive azoospermia the testes produce sperm normally but the route out is blocked, whether by a previous vasectomy, infection, injury, or a congenitally absent vas deferens. In non-obstructive azoospermia the pathway is clear but sperm production itself is impaired.
That answer determines the technique. Where there is an obstruction, sperm can usually be collected straightforwardly from the epididymis or testis with a fine needle, and the chance of finding sperm is high. Where production is the issue, sperm may still exist in isolated pockets of testicular tissue, and locating them calls for microsurgical exploration under an operating microscope.
Because surgically retrieved sperm is limited in number and often immotile, it is always used with ICSI. Retrieval can be done on the same day as egg collection, or performed in advance and frozen — the latter often preferable, since it confirms sperm exists before the female partner commits to a full stimulation cycle. Recovery is quick: a daycare procedure under short anaesthesia, with most men back to desk work in two to three days.
One point deserves emphasis for couples who have been told nothing can be done. Azoospermia is not the same as sterility. With a proper workup and the right retrieval technique, a substantial proportion of these men go on to have children who are genetically their own.
When To Consider This
Zero sperm in the ejaculate, confirmed on two semen analyses
Prior vasectomy where reversal isn't possible or has failed
Congenitally absent vas deferens
Non-obstructive azoospermia after a complete hormonal and genetic workup
Previous infection or scarring blocking the epididymis or vas deferens
Seek Care Promptly If
- Severe or increasing scrotal pain and swelling after the procedure
- Bleeding or a rapidly enlarging haematoma at the site
- Fever, chills or discharge suggesting infection
What's Involved
Expert Video Guides
Zero Sperm Count: What PESA, TESA and Micro TESE Can Do
9 Years On, Parenthood at Last
Frequently Asked Questions
Often, yes. Through techniques like PESA, TESA or Micro TESE, sperm can be extracted directly from the reproductive tract and used with ICSI.
In obstructive azoospermia, sperm production is normal but a blockage stops sperm reaching the ejaculate, so PESA or TESA usually succeed. In non-obstructive azoospermia, the testicles produce very little sperm, so Micro TESE — which examines tissue under a microscope to find isolated productive areas — is generally recommended.
It is performed under general or regional anaesthesia as day-case surgery. Most men experience mild scrotal discomfort for a few days, managed with routine pain relief.
Yes. Retrieved sperm is commonly frozen immediately, so a single successful retrieval can support more than one ICSI attempt without repeat surgery.
This happens in some non-obstructive cases despite the procedure's high yield. We discuss donor sperm options at that point, always led by what you and your partner decide.