Male fertility
Blockage may follow vasectomy, infection, surgery or absence of the vas deferens from birth. Hormone levels and testicular size are usually normal, and sperm retrieval from the epididymis or testis is almost always successful.
Also known as: blocked tubes male, post-vasectomy azoospermia
Related Canada guides
Sources
- Canadian Urological Association
Last reviewed: September 9, 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.