PCT or Postcoital Test may be a popular phrase in the diagnostic world. But what is it and why it is happening is on a hazy side. PCT is related to the mucus of women. While the women feel abnormalities or facing infertility the doctors prescribed Postcoital Test to examine the exact cause. This test shows any connection between man and woman. In case the couple has connected and the female side is facing an abundance of mucus, then the physician takes the mucus sample from cervical canal and spread that on a glass slide. After adding a limited quantity of posterior fornix, the sperm shows its movements in mucus. This is the base of PCT. The examination is to see man's sperm's presence in woman's mucus.