CXCL10 and tuberculosis: Serum IP-10 levels did not differ significantly between TB patients at diagnosis (median, 85.37 pg/ml; IQR, 60.92-171.30) and healthy controls (median, 68.62 pg/ml; IQR, 43.19-87.01), although the levels in patients were slightly higher than those in the healthy controls (P = 0.0829; Fig. 1a).