Mycobacterium tuberculosis (Mtb) is estimated to have infected one third of the world's population based on reports from surveys on positive skin tuberculin tests. (jcvi.org)
Screening tests include the Mantoux tuberculin skin test (TST) and interferon - gamma release assays (IGRAs); both are moderately sensitive and highly specific. (sciencedaily.com)
I prefer a 1cc tuberculin syringe with removable needle. (2ndchance.info)