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In this video, youâll learn how to test for TB infection by. administering and reading the Mantoux tuberculin skin test. The Mantoux tuberculin skin test should always be placed. and read by a designated, trained health care worker . Discuss skin test training, certification. programs, and requirements in your locality . In your work site: yWhat type of health care worker is. designated to place and read the skin.
The test is done by putting a small amount of TB protein (antigens) under the top layer of skin on your inner forearm. If you have ever been exposed to the TB bacteria (Mycobacterium tuberculosis), your skin will react to the antigens by developing a firm red bump at the site within 2 days.The TB antigens used in a tuberculin skin test are called purified protein derivative (PPD). tuberculin skin test is done to find people who have tuberculosis (TB), including: 1  People who have been in close contact with someone known to have TB. 2  Health care workers who are likely to be exposed to TB. 3  People with TB symptoms, such as an ongoing cough, night sweats, and unexplained weight loss.