Pap smear test is done to detect cancer in the cervix (opening of the uterus or womb). Papanicolaou test is abbreviated as Pap test which is also known as cervical smear, Pap smear or smear test. This is most effective method to detect and prevent cancer in the cervical area. If the results are abnormal in Pap smear test, colposcopy, endocervical curettage and biopsy will be done. It is advisable to do Pap smear test from the age of 21 years in the interval of 3 years to prevent cancer. The test finds the precancerous stage and cervical dysplasia.