A buccal smear (pronounced "buckle") is the painless removal of a sample of cells from the lining of the mouth (inside of the cheek) for study.
Sex chromatin test
The health care provider will gently scrape the inside of the cheek with a small spatula to collect cells for testing.
Rinse and wash the mouth as instructed.
You will feel a scraping sensation as cells are removed from the cheek.
The procedure is used to obtain cells for chromosome and DNA analysis,most often for genetic testing. The International Olympic Committee adopted the test many years ago to help detect male imposters among female athletes. When the test is used in this way, it's called the sex chromatin test. This method may also help establish the sexual identity of newborns.
There are no risks.
Review Date: 11/4/2008
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright ©2010 A.D.A.M., Inc., as modified by University of California San Francisco. Any duplication or distribution of the information contained herein is strictly prohibited.
Information developed by A.D.A.M., Inc. regarding tests and test results may not directly correspond with information provided by UCSF Medical Center. Please discuss with your doctor any questions or concerns you may have.