ADA and tuberculosis: The sensitivity from highest to lowest was T-SPOT.TB, ADA (≥ 30 U/L)/T-SPOT.TB (≥ 48.5 SFCs/106 PEMC [cut-off value]), ADA (≥ 40 U/L)/ADA (≥ 41.5 U/L [cut-off value]), and Xpert.