Post-Coital Test

The post-coital test is used to examine the interaction between the sperm and cervical mucus. The post-coital test is testdone after intercourse between you and your partner to check whether sperms are active or dead.
This test is usually done between cycle days 12-15, around the time of ovulation when the cervical mucus is thin and stretchy. Doctors want to collect the sample between two to eight hours after you have intercourse with your partner.

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If the large numbers of sperm are found inactive or dead, it could indicate infection or antibody reaction.
The post-coital test may be done if your partner feels difficulty in conceiving. There are various reasons behind this

  • Sometimes Cervical mucus may cause infertility.
  • Problems related to the immune system may cause infertility.
  • A low or even zero sperm count


  • The test is common during infertility, and can be helpful for doctors to see how sperm and cervical mucus react in your body after sex. The doctor will take the cervical mucus sample and examine the sample in laboratories.
  • Doctor will use a speculum and take a small sample of the cervical mucus from the cervix. The doctor will use the sample to look at it under a microscope.
  • The cervical mucus should be very clear and doctors also check the elasticity of the cervical mucus.
  • Doctors also examine that if there are any other cells are present rather than sperms. There is a greater probability that pregnancy will occur when the sperm population is higher.


In some cases, there is an incompatibility in cervical mucus and sperm this may cause sperm to become inactive or die and create difficulties in conceiving a child.

Abnormal results may occur due to infections, surgeries or antibody reactions. This test is not done often because Post-coital not always gives the correct results, sometimes if the test is done too early before ovulation or too late after the ovulation it may give the false results.

An abnormal result also occurs due to incorrect timing of the test. If the abnormal or negative results received, this test repeated again between the intervals of 10-12 days.



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