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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.
Two to three days after getting a tuberculin skin test, the size of any bump at the site is measured. 1  Positive, meaning you have been infected with TB bacteria.  Negative, meaning you have not been infected with TB bacteria or your body cannot respond to the protein injected because of a weakened immune system.