Fig. 2. ROC curve of the CLIA-IGRA to diagnose latent tuberculosis infection. Infection was assessed based on the results of the QFT-GIT assay.

Abbreviations: AUC, area under the curve; CI, confidence interval; CLIA, chemiluminescent immunoanalyzer-based interferon-gamma releasing assay; QFT-GIT, QuantiFERON-TB Gold In-Tube.