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Tuberculin skin test

Tuberculin skin test
The tuberculin skin test is performed to evaluate whether a person has been exposed to tuberculosis. If there has been a prior exposure, antibodies are formed and remain in the body. During the skin test, the tuberculosis antigen is injected under the skin and if antibodies are present, the body will have an immune response. There will be an area of inflammation at the site of the injection.

Review Date: 11/1/2009
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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