CXCL10 and tuberculosis: We also observed very high levels of IP-10 in our 29-plex measurements, and which correlated with IFN-γ levels (r = 0.51, p = 0.009) but like IFN-γ, IP-10, which helps to amplify IFN-γ responses by its effects on macrophages, does not differentiate between active TB and LTBI.