CALCA and tuberculosis: Based on the APPs data analysis, the mean ENG values for the active TB, LTBI, and healthy individuals were 1267.88 ± 214.47, 1209.12 ± 252.60, and 1371.81 ± 303.69 pg/mL, respectively, and their corresponding mean PCT values were 44.11 ± 29.21, 22.68 ± 11.67, and 18.15 ± 4.58 pg/mL.