The test is done by collecting cells from your cervix, the lower narrow end of your uterus (womb) that connects your womb to your vagina (birth canal). The cells are checked to see if they have any signs of cancer.

Why Is a Pap Smear Done?

A Pap smear looks for changes in cervical cells before they turn into cancer. If you have cancer, finding it early gives you the best chance of fighting it. If you don’t have cancer, finding cell changes early can help prevent you from getting cancer.

How Often Should I Have a Pap Smear?

You should have the test every 3 years from ages 21 to 65. It’s usually combined with a pelvic exam.

Your doctor may recommend you have a Pap test more often than once every 3 years if you have:

• Cervical cancer or a Pap test that revealed precancerous cells
• HIV infection
• A weakened immune system due to an organ transplant, chemotherapy, or chronic corticosteroid use
• Been exposed before birth to diethylstilbestrol (DES), a hormone given to pregnant women between 1940 and 1971

Pap screen testing should begin at age 21 or with the onset of sexual activity. The frequency of screening varies based on your age and risk factors

WebMD. (2009, December 02). Retrieved from http://women.webmd.com/guide/pap-smear