A precipitate made from a sterile filtrate of M. tuberculosis culture medium.
A liquid that is injected under the skin on the lower part of your arm during a TB skin test. If you have latent TB infection, you will probably have a positive reaction to the tuberculin.
protein derived from tubercle bacilli that have been killed by heating; used to determine whether a person has TB infection. Tuberculin is not a vaccine.
A protein extracted from Mycobacterium tuberculosis that is used in a skin test to determine if a person has been exposed to tuberculosis. The tuberculin preparation in most common use today is purified protein derivative (PPD) tuberculin. PPD is injected (or multiple-punctured) into the skin. If a reaction is seen at and around the site of injection, the test is positive. The PPD tuberculin test done by intradermal injection is also known as the Mantoux test.
A protein extract from the Mycobacterium cell wall that is injected intracutaneously to test for tuberculosis.
A protein injected into the skin to test for tuberculosis infection.
Tuberculin is an antigen used to aid in the diagnosis of tuberculosis infection. An infection with the bacterium that causes tuberculosis frequently leads to a sensitivity to these antigens. Tuberculin was discovered by German scientist and physician Robert Koch in 1890.
