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Antisperm Antibody Test

Antisperm Antibody Test

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 sperm.

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. The testicles normally keep the sperm away from the rest of the body and the immune system.

A 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 infertility.

– The antisperm antibody test may be done if:
A cause for infertility cannot be found. Experts disagree about the usefulness of the test because the result may not change the treatment.
The results from another fertility test are not clear.

Sample :

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 ejaculating.

Results :

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.

Antisperm Antibody Test

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