Mantoux testmedical dictionary

<investigation>

A test for prior exposure to the organism that causes tuberculosis.

This tests tuberculin reactivity by the injection of purified protein derivative into the skin of the patient. The injection site is examined after 2-3 days and a positive reaction is indicated by reddening of the skin around the injection site. The reaction is a sign of T-cell mediated immunity.

A positive test indicates current or previous infection with Mycobacterium tuberculosis, or a successful previous vaccination.

(12 Mar 2008)

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