Should I get retested for a semen analysis? My semen was collected 32 hours after my last ejaculation.

I had my vasectomy 3.5 months ago now and took my semen analysis. It was negative, no sperm seen. My question is that I was never given any instructions on this procedure and I've recently read online that you should wait at least 2 to 7 days after your last ejaculation to collect a sample. I wasn't aware of this. Does it matter? I collected my sample about 32 hours after my last ejaculation, so less than 2 days. Should I get retested?

ANSWERS FROM DOCTORS (4)


Answered by John C. McHugh, MD

A post-vasectomy semen analysis does not have to meet the criteria of an infertility semen analysis. In my office, we like to see the specimen on the day of the collection. Unlike a full semen analysis, it doesn't matter the length of time since the last ejaculation or getting it to the doctor quickly within a 30-minute time frame.

After a vasectomy, we are looking simply for the presence or absence of sperm. I do prefer seeing the semen the day of the ejaculation. I like to see two negative samples.

Published on Dec 20, 2018

Answered by John C. McHugh, MD (View Profile)

A post-vasectomy semen analysis does not have to meet the criteria of an infertility semen analysis. In my office, we like to see the specimen on the day of the collection. Unlike a full semen analysis, it doesn't matter the length of time since the last ejaculation or getting it to the doctor quickly within a 30-minute time frame.

After a vasectomy, we are looking simply for the presence or absence of sperm. I do prefer seeing the semen the day of the ejaculation. I like to see two negative samples.

Published on Jul 11, 2012


Answered by Mark J. Saslawsky, MD - Memphis Office

No, at this point it shouldn’t matter.

Published on Oct 18, 2018

Answered by Mark J. Saslawsky, MD - Memphis Office (View Profile)

No, at this point it shouldn’t matter.

Published on Jul 11, 2012


Answered by Russel H. Williams, MD

One semen analysis showing less than 100,000 non-motile (non-swimming) sperm is sufficient proof to show you are sterile. If you want to confirm, then it is ok to repeat your semen sample after an abstinence period of 2-3 days.

Published on Oct 18, 2018

//imgs-origin.edoctors.com/imageresizer/image/user_uploads/58x58_85-1/doctors/5220_1539814557.jpg
Answered by Russel H. Williams, MD

One semen analysis showing less than 100,000 non-motile (non-swimming) sperm is sufficient proof to show you are sterile. If you want to confirm, then it is ok to repeat your semen sample after an abstinence period of 2-3 days.

Published on Jul 11, 2012


Answered by Naresh Parajuli, MBBS, FRACGP

Your vasectomy is successful as per your semen test result. You were close to 2 days abstinence. However, for your peace of mind, if you want to do another test, it will put you at ease.

Published on Oct 18, 2018

//imgs-origin.edoctors.com/imageresizer/image/user_uploads/58x58_85-1/doctors/8665_1532029450.jpg
Answered by Naresh Parajuli, MBBS, FRACGP

Your vasectomy is successful as per your semen test result. You were close to 2 days abstinence. However, for your peace of mind, if you want to do another test, it will put you at ease.

Published on Jul 11, 2012


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