Positivity of QFT-IT, IP-10 and TST in healthy adult subjects.

<p>10 mm cut-off point was used for TST.</p><p>QFT-IT - QuantiFERON-TB Gold.</p><p>IP-10 - Interferon gamma inducible protein-10.</p><p>TST - Tuberculin skin test.</p><p>N - Number of subjects.</p><p>Pos - Positive.</p><p>Neg - Negative.</p><p>Indt - Indeterminate.</p><p>% Spec - Percentage of specificity, calculated after excluding indeterminate results.