A Pap test looks for early signs of cancer in your cervix. Early changes in cervical cells don't cause symptoms. Often the only way to find them is with a Pap test. A Pap test can find these problems early, when they are easier to treat. Pap tests can also find some infections of the cervix and vagina.

A Pap test is a procedure that helps find changes in the cervix that may lead to cancer. The cervix is the part of the uterus that opens into the vagina. For this test, a small sample of cells is taken from the cervix. This is done in your doctor's office. The cells are then examined in a lab. A Pap test is a safe procedure. It takes just a few minutes and causes little or no discomfort.

Human papillomavirus (HPV) is a group of viruses that spread through skin contact and sex. Some types cause cell changes (dysplasia) in the cervix that can lead to cancer. In fact, HPV infection is the biggest risk factor for cervical cancer. Doctors can now test for HPV. This is often done with the Pap test. That's why it's important to have Pap tests as advised by your doctor. It helps ensure that any abnormal cells will be found. They can be treated before they become cancer.

Ask your doctor:

• When to start having Pap tests.
• If you should have an HPV test at the same time.
• How often to have these tests.

The American Cancer Society advises:

• Have your first Pap test at age 21, and then every 3 years until age 29. HPV testing is not advised during this time. But it may be done to follow up on an abnormal Pap test.
• Starting at age 30, have a Pap test with an HPV test every 5 years. This should be done until age 65. Another option for people ages 30 to 65 is just the Pap test every 3 years.
• You may need a different test schedule if you are at high risk for cervical cancer. Risk factors include having HIV, a weak immune system, multiple sexual partners, or exposure to the medicine DES (diethylstilbestrol) before you were born. Talk with your doctor about the best schedule for you.
• If you're older than 65, had regular tests for the last 10 years, and no abnormal results in the last 20 years, you may stop the tests.
• If you had a hysterectomy that included removing your cervix, you can stop the tests, unless it was done to treat cervical cancer or precancer. If you still have your cervix, you should have tests in line with the above guidelines.
• Routine tests don't need to be done each year. But if a test is abnormal, your doctor will tell you how often to be tested.
• People who have had the HPV vaccine should still follow these guidelines.
• If you had cervical cancer, talk with your doctor about the test plan that's best for you.