How long after a vasectomy will I become completely sterile?

Answers from doctors (9)


More About Doctor Ranjith Ramasamy M.D.

Published on Feb 18, 2017

It takes unto eight to 16 weeks after vasectomy. There is a small chance of recanalization even after no sperm is seen after eight to 16 weeks.

Answered by Ranjith Ramasamy M.D. (View Profile)

It takes unto eight to 16 weeks after vasectomy. There is a small chance of recanalization even after no sperm is seen after eight to 16 weeks.

Published on Jul 11, 2012


Leonid Kotkin, MD

Published on Jul 06, 2015

The life cycle of sperm is 63 days. You are expected to be sterile that needs to be confirmed by semen analysis, typically, twice.

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Answered by Leonid Kotkin, MD

The life cycle of sperm is 63 days. You are expected to be sterile that needs to be confirmed by semen analysis, typically, twice.

Published on Jul 11, 2012


Stephen F. Shaban, MD

Published on Jul 03, 2015

A safe time period to say, would be approximately 3 months after vasectomy with weekly ejaculations.

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Answered by Stephen F. Shaban, MD

A safe time period to say, would be approximately 3 months after vasectomy with weekly ejaculations.

Published on Jul 11, 2012


More About Doctor Ronald E. Anglade, MD

Published on Jul 01, 2015

Generally, After a vasectomy, I will check a semen specimen after 3months and at least 12 ejaculations.At that point I expect sperm to be absent from the specimen. Some physicians will want to check another specimen 6-12 weeks later to confirm sterility.

Answered by Ronald E. Anglade, MD (View Profile)

Generally, After a vasectomy, I will check a semen specimen after 3months and at least 12 ejaculations.At that point I expect sperm to be absent from the specimen. Some physicians will want to check another specimen 6-12 weeks later to confirm sterility.

Published on Jul 11, 2012


Michael J. Karasis, MD

Published on Jul 01, 2015

Don't think in terms of time; rather think in terms of the number of ejaculates once resuming intercourse after the vasectomy. I usually require 25 ejaculates to have happened post-vasectomy and then I get a sperm count to be sure there are no remaining sperm

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Answered by Michael J. Karasis, MD

Don't think in terms of time; rather think in terms of the number of ejaculates once resuming intercourse after the vasectomy. I usually require 25 ejaculates to have happened post-vasectomy and then I get a sperm count to be sure there are no remaining sperm

Published on Jul 11, 2012


Marc Goldstein, MD, FACS

Published on Jul 01, 2015

80% of men will be sterile after 15 ejaculations or 6 weeks after a vasectomy. It is important to have a semen analysis at that point to confirm absence of live sperm before stopping contraception.

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Answered by Marc Goldstein, MD, FACS

80% of men will be sterile after 15 ejaculations or 6 weeks after a vasectomy. It is important to have a semen analysis at that point to confirm absence of live sperm before stopping contraception.

Published on Jul 11, 2012


More About Doctor Steven K. Sterzer, MD

Published on Jul 01, 2015

Sterility is achieved by ejaculation which clears out the remaining stored sperm cells. The vast majority of men are sterile after 15 ejaculations.

Answered by Steven K. Sterzer, MD (View Profile)

Sterility is achieved by ejaculation which clears out the remaining stored sperm cells. The vast majority of men are sterile after 15 ejaculations.

Published on Jul 11, 2012


Ira D. Sharlip, MD

Published on Jul 01, 2015

The time from vasectomy to sterility (a zero sperm count) depends partially on the surgical technique that was used to occlude (block off) the vas deferens. Almost all patients are sterile by 6-16 weeks after vasectomy.

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Answered by Ira D. Sharlip, MD

The time from vasectomy to sterility (a zero sperm count) depends partially on the surgical technique that was used to occlude (block off) the vas deferens. Almost all patients are sterile by 6-16 weeks after vasectomy.

Published on Jul 11, 2012


Anand M. Dhanda, MD, FACS

Published on Jul 01, 2015

When semen analysis shows NO sperms

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Answered by Anand M. Dhanda, MD, FACS

When semen analysis shows NO sperms

Published on Jul 11, 2012


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