How long does it take for a man to become sterile after a vasectomy?

By Zaira Salvador BSc, MSc.
Last Update: 03/06/2018

Actually, it takes some time for sperm to disappear fully from the vasa deferentia. It is estimated that, by 10 weeks, 85% of men will have no sperm in the ejaculate.

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BSc, MSc
Embryologist
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia (UPV). Embryologist specializing in Assisted Procreation, with a Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI).
License: 3185-CV
Embryologist. Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia (UPV). Embryologist specializing in Assisted Procreation, with a Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI). License: 3185-CV.
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