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What are reasons you may have low sperm in your semen?

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There are several reasons you might have low sperm in your semen:

Retrograde ejaculation. In this condition, your sperm ejaculates backward, into your bladder.

You're missing the main sperm pipeline (the vas deferens). Some men are born without a main pipeline for sperm.

Obstruction. There can be a blockage anywhere between the testicles and the penis.

Anti-sperm antibodies. They attack your sperm on the way to the egg.

"Idiopathic" infertility. It's a fancy way of saying your doctor can't find a reason for your abnormal or low sperm count.

From: Fertility Tests for Men WebMD Medical Reference

SOURCES: American College of Obstetricians and Gynecologists web site: "Evaluating Infertility." American Academy of Family Physicians web site: "Male Infertility." American Urological Association: "Male Infertility: The Optimal Evaluation of the Infertile Male: Best Practice Statement," 2011.


Walsh, P.  , 8th Ed., 2002, Elsevier. Campbell's Urology

Quaas, A.  , 2008. Rev Obstet Gynecol

UpToDate.

Reviewed by Melinda Ratini on November 15, 2017

SOURCES: American College of Obstetricians and Gynecologists web site: "Evaluating Infertility." American Academy of Family Physicians web site: "Male Infertility." American Urological Association: "Male Infertility: The Optimal Evaluation of the Infertile Male: Best Practice Statement," 2011.


Walsh, P.  , 8th Ed., 2002, Elsevier. Campbell's Urology

Quaas, A.  , 2008. Rev Obstet Gynecol

UpToDate.

Reviewed by Melinda Ratini on November 15, 2017

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Should you get checked for infertility if you are a man and your partner isn't getting pregnant?

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