Noun
tuberculin (a derivative of tubercle bacillus) is injected intradermally; a red area appearing 1-3 days later signifies an exposure (past or present) to tubercle bacilli and the need for further testing
Source: WordNetBCG vaccine and the Mantoux test The role of Mantoux testing in people who have been vaccinated is disputed. Source: Internet
The Heaf test was used until 2005 in the UK, when it was replaced by the Mantoux test. Source: Internet