The Pap test checks for cervical cancer. Cells scraped from the opening of the cervix are examined under a microscope. The cervix is the lower part of the uterus (womb) that opens at the top of the vagina.
This test is sometimes called a Pap smear.
Papanicolaou test; Pap smear; Cervical cancer screening - pap test
How the Test is Performed
You lie on a table and place your feet in stirrups. The health care provider gently places an instrument called a speculum into the vagina to open it slightly. This allows the provider to see inside the vagina and cervix.
Cells are gently scraped from the cervix area. The sample of cells is sent to a lab for examination.
How to Prepare for the Test
Tell your provider about all the medicines you are taking. Some birth control pills that contain estrogen or progestin may affect test results.
Also tell your provider if you:
Do not do the following for 24 hours before the test:
Avoid scheduling your Pap test while you have your period (are menstruating). Blood may make the Pap test results less accurate. If you are having unexpected bleeding, do not cancel your exam. Your provider will determine if the Pap test can still be done.
Empty your bladder just before the test.
How the Test will Feel
A Pap test causes little to no discomfort for most women. It can cause some discomfort, similar to menstrual cramps. You may also feel some pressure during the exam.
You may bleed a little bit after the test.
Why the Test is Performed
The Pap test is a screening test for cervical cancer. Most cervical cancers can be detected early if a woman has routine Pap tests.
Screening should start at age 21.
After the first test:
You may not need to have a Pap test if you have had a total hysterectomy (uterus and cervix removed) and have not had an abnormal Pap test, cervical cancer, or other pelvic cancer. Discuss this with your provider.
A normal result means there are no abnormal cells present. The Pap test is not 100% accurate. Cervical cancer may be missed in a small number of cases. Most of the time, cervical cancer develops very slowly, and follow-up Pap tests should find any changes in time for treatment.
What Abnormal Results Mean
Abnormal results are grouped as follows:
ASCUS or AGUS
LSIL (low-grade dysplasia) or HSIL (high-grade dysplasia):
Carcinoma in situ (CIS):
Atypical squamous cells (ASC):
Atypical glandular cells (AGC):
When a Pap test shows abnormal changes, further testing or follow-up is needed. The next step depends on the results of the Pap test, your previous history of Pap tests, and risk factors you may have for cervical cancer.
For minor cell changes, doctors will recommend another Pap test in 6 to 12 months.
Follow-up testing may include:
American College of Obstetricians and Gynecologists. ACOG Practice Bulletin No. 99: Management of abnormal cervical cytology and histology. Obstet Gynecol. 2008;112(6):1419-1444. PMID: 19037054 http://www.ncbi.nlm.nih.gov/pubmed/19037054
American College of Obstetricians and Gynecologists. ACOG Practice Bulletin No. 131: Screening for cervical cancer. Obstet Gynecol. 2012;120(5):1222-1238. PMID: 23090560 http://www.ncbi.nlm.nih.gov/pubmed/23090560
American College of Obstetricians and Gynecologists. Committee Opinion No. 463: Cervical cancer in adolescents: screening, evaluation, and management. Obstet Gynecol. 2010;116(2 Pt 1):469-472. PMID: 20664421 http://www.ncbi.nlm.nih.gov/pubmed/?term=American+College+of+Obstetricians+and+Gynecologists.+Committee+Opinion+No.+463
Noller KL. Intraepithelial neoplasia of the lower genital tract (cervix, vulva): etiology, screening, diagnostic techniques, management. In: Lentz GM, Lobo RA, Gershenson DM, Katz VL, eds. Comprehensive Gynecology. 6th ed. Philadelphia, PA: Elsevier Mosby; 2012:chap 28.
Saslow D, Solomon D, Lawson HW, et al. American Cancer Society, American Society for Colposcopy and Cervical Pathology, and American Society for Clinical Pathology screening guidelines for the prevention and early detection of cervical cancer. CA Cancer J Clin. 2012;62(3):147-172. PMID: 22422631 http://www.ncbi.nlm.nih.gov/pubmed/22422631
Screening for Cervical Cancer. U.S. Preventive Services Task Force. http://www.uspreventiveservicestaskforce.org/uspstf/uspscerv.htm. Accessed April 22, 2015.
Review Date: 1/16/2015
Reviewed By: Cynthia D. White, MD, Fellow American College of Obstetricians and Gynecologists, Group Health Cooperative, Bellevue, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.
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