A member asked:

How long is it before a vasectomy becomes permanant?

3 doctors weighed in across 2 answers

12 ejaculates: There should be at least 12 ejaculates followed by a negative (zero) sperm count.

Answered 9/19/2012

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Dr. James Lin answered

Here ...: Precaution against pregnancy after vasectomy should continue until pos-vas semen exam shows no sperm. Generally, some 85% of men will have no sperm in their semen some 2 months or 15 ejaculations after vasectomy. So, it becomes permanent after no more sperm in semen; but, occasionally, post-vasectomy vas-reconnection may happen in.

Answered 4/30/2014

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