What is What is Azoospermia?
💡 Azoospermia is the complete absence of sperm in the ejaculate confirmed by centrifuged semen analysis. Affects ~1% of men. Two types: obstructive (OA — sperm produced but blocked, 80–100% retrieval) and non-obstructive (NOA — impaired production, 30–60% Micro-TESE retrieval). Both treated with surgical retrieval + ICSI.
Azoospermia is the complete absence of sperm in the ejaculate, confirmed on two separate centrifuged semen analyses. It affects approximately 1% of all men and 10–15% of infertile men — and is categorised as obstructive (OA) or non-obstructive (NOA), each with distinct causes and treatment approaches.
🇮🇳 India Context: What is Azoospermia is widely assessed and treated across major Indian fertility centres including Chennai, Mumbai, Bangalore, Delhi, and Hyderabad.
What are the key characteristics of What is Azoospermia?
- Defined as absence of sperm on two separate centrifuged semen analyses — confirmation of complete azoospermia
- Affects ~1% of all men; 10–15% of men presenting with infertility
- Obstructive azoospermia (OA): normal spermatogenesis — blockage prevents transit to ejaculate; causes: vasectomy, CBAVD, epididymal obstruction, ejaculatory duct cyst
- Non-obstructive azoospermia (NOA): impaired spermatogenesis — Klinefelter syndrome (47XXY), Y microdeletion, cryptorchidism, chemotherapy, idiopathic
- Differentiating OA vs NOA: testicular volume (normal in OA), FSH (elevated in NOA), testosterone, LH, genetic tests (karyotype, Y microdeletion array)
- OA treatment: surgical retrieval (PESA/MESA/TESE) achieves sperm in 80–100% — ICSI outcomes equivalent to ejaculated sperm IVF
- NOA treatment: Micro-TESE achieves sperm retrieval in 30–60% — higher than conventional TESE (30–50%) due to microscope-guided identification
- Mandatory genetics in NOA: AZFa/b microdeletion is unfavourable prognosis (no retrieval expected); AZFc allows Micro-TESE
How does What is Azoospermia work?
Why does What is Azoospermia matter in fertility?
Azoospermia does not preclude biological fatherhood — it is one of the most treatable causes of male infertility when surgically managed. In OA, PESA/MESA/TESE with ICSI achieves pregnancy rates comparable to ejaculated sperm IVF cycles. In NOA, Micro-TESE combined with ICSI offers 30–60% sperm retrieval probability — and a single viable sperm is sufficient for fertilisation, embryo development, and live birth. Genetic counselling is essential: Y microdeletion AZFa/b carries unfavourable prognosis; AZFc patients have a realistic chance of Micro-TESE success but will transmit the deletion to male offspring. In India, surgical sperm retrieval is available at all major andrology and IVF centres in metro cities.
What are related terms to What is Azoospermia?
TESE
TESE (testicular sperm extraction) is a surgical procedure that retrieves sperm …
Micro-TESE
Micro-TESE (microsurgical testicular sperm extraction) is a surgical procedure p…
ICSI (Intracytoplasmic Sperm Injection)
ICSI is an advanced fertility technique. A single healthy sperm is injected dire…
PESA
PESA (percutaneous epididymal sperm aspiration) is a minimally invasive sperm re…
FAQs about What is Azoospermia
What is azoospermia?
Azoospermia is the complete absence of sperm in the ejaculate, confirmed on two centrifuged semen analyses. Affects ~1% of all men and 10–15% of infertile men. Two types: obstructive (OA — blocked; 80–100% retrieval) and non-obstructive (NOA — impaired production; 30–60% Micro-TESE retrieval).
What is the difference between obstructive and non-obstructive azoospermia?
Obstructive azoospermia (OA): sperm is produced normally but cannot reach ejaculate due to a blockage (vasectomy, CBAVD, epididymal obstruction). Non-obstructive azoospermia (NOA): spermatogenesis is impaired — testis produces insufficient or no sperm. FSH is elevated in NOA; normal in OA. Testicular volume is normal in OA.
Can a man with azoospermia father a child?
Yes. In OA: surgical retrieval (PESA, MESA, TESE) achieves sperm in 80–100% — ICSI outcomes are comparable to ejaculated sperm. In NOA: Micro-TESE retrieves sperm in 30–60% — even a single sperm is sufficient for ICSI fertilisation, embryo development, and live birth.
What is Micro-TESE and why is it used in azoospermia?
Micro-TESE is microsurgical testicular sperm extraction using an operating microscope to identify dilated, sperm-producing tubules in non-obstructive azoospermia. It achieves 30–60% sperm retrieval in NOA — higher than conventional TESE (30–50%) with less testicular damage. It is the preferred technique for NOA.
What genetic tests are required before azoospermia treatment?
For NOA: karyotype (to exclude Klinefelter syndrome 47XXY) and Y chromosome microdeletion analysis (AZFa/b/c deletions). AZFa and AZFb deletions carry unfavourable prognosis for Micro-TESE. AZFc deletion patients have realistic retrieval chances. For CBAVD (OA): CFTR gene mutation testing for cystic fibrosis carrier status.
📚 Learn More
🏥 Find Specialists for What is Azoospermia in India
Connect with verified fertility specialists who can guide you through what is azoospermia.