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An antisperm antibody test looks for special proteins (antibodies)
that fight against a man's sperm in blood, vaginal fluids, or semen. The test
uses a sample of sperm and adds a substance that binds only to affected
Semen can cause an
immune system response in either the man's or woman's
body. The antibodies can damage or kill sperm. If a high number of sperm
antibodies come into contact with a man's sperm, it may be hard for the sperm
to fertilize an egg. The couple has a hard time becoming pregnant. This is
called immunologic infertility.
A man can
make sperm antibodies when his sperm come into contact with his immune system.
This can happen when the
testicles are injured or after surgeries (such as a
vasectomy) or after a
prostate gland infection. The testicles normally keep
the sperm away from the rest of the body and the immune system.
woman can have an
allergic reaction to her partner's semen and make
sperm antibodies. This kind of immune response is not fully understood but may
affect fertility. This is a rare cause of
The antisperm antibody test may be done
Talk to your doctor about any concerns
you have regarding the need for the test, its risks, how it will be done, or
what the results will mean. To help you understand the importance of this test,
fill out the
medical test information form (What is a PDF document?).
For women, a
blood sample is taken from a vein in the arm.
For men, a
semen sample is collected after the blood and vaginal fluid samples are taken.
You should not release your sperm (ejaculate) for 2 days before the test. It is
important to not go longer than 5 days before the test without
professional taking a sample of your blood will:
A semen sample is collected by
masturbation. You should urinate and then wash and rinse your hands and penis
before collecting the semen in a sterile cup. You cannot use lubricants or
condoms when collecting the sample. If you collect the semen sample at home, be
sure to get it to the lab or clinic within 1 hour. Keep the sample at body
temperature and out of direct sunlight. The sample cannot be collected by
having sexual intercourse and then withdrawing when you ejaculate, because
vaginal fluid may be mixed with the sperm.
The blood sample is taken from a vein
in your arm. An elastic band is wrapped around your upper arm. It may feel
tight. You may feel nothing at all from the needle, or you may feel a quick
sting or pinch.
Collecting a semen sample does not
cause any discomfort. If masturbation is against your religious beliefs, talk
with your doctor.
There is very little chance of a
problem from having a blood sample taken from a vein.
Usually there are no problems from
collecting a semen sample.
An antisperm antibody test looks for
special proteins (antibodies) that fight against a man's
sperm in blood, vaginal fluids, or semen. The higher the level of
antibody-affected sperm found in the semen, the lower the chance of the sperm
fertilizing an egg.
Collecting a semen sample within
48 hours of ejaculating or after not ejaculating for longer than 5 days may
affect the results of this test.
Other Works Consulted
Fischbach FT, Dunning MB III, eds. (2009). Manual of Laboratory and Diagnostic Tests, 8th ed. Philadelphia: Lippincott Williams and Wilkins. Fritz MA, Speroff L (2011). Male infertility. In Clinical Gynecologic Endocrinology and Infertility, 8th ed., pp. 1249-1292. Philadelphia: Lippincott Williams and Wilkins. Pagana KD, Pagana TJ (2010). Mosby's Manual of Diagnostic and Laboratory Tests, 4th ed. St. Louis: Mosby.
ByHealthwise Staff Primary Medical Reviewer Sarah Marshall, MD - Family Medicine E. Gregory Thompson, MD - Internal Medicine Adam Husney, MD - Family Medicine Kathleen Romito, MD - Family Medicine Specialist Medical Reviewer Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
Current as ofMarch 16, 2017
Current as of:
March 16, 2017
Sarah Marshall, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
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One Children’s Hospital Way
4401 Penn Ave.
Pittsburgh, PA 15224
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