CXCL1 and tuberculosis: CXCL1 had 94.5% (95% confidence intervals (CI), 85.1–98.5%) sensitivity and 88.8% (95% CI, 80.5–93.8%) specificity for ATB vs LTBI; and 90.9% (95% CI, 80.4–96.1%) sensitivity and 71.4% (95% CI, 57.6–82.2%) specificity for ATB vs non-TB.