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Guidelines for Reading the Mantoux Tuberculin Skin Test. NOTE: The results of the skin test must be read by a trained health care worker 48 to 72 hours from the time the test was administered. (Results reported as âpositiveâ or ânegativeâ are. not. acceptable.) Supplies.
Mantoux tuberculin skin test An intracutaneous test used to diagnose TB based on hypersensitivity to tuberculin, a concentrate of TB antigen, the standard preparation of which is PPDâpurified protein derivative. See PPD, Tuberculin test, Tuberculosis. tuberculin skin test in which a solution of 0.1 mL of PPD-tuberculin containing 5 tuberculin units is injected intradermally into either the anterior or posterior surface of the forearm. The test is read 48 to 72 hours after injection.