IFNG and tuberculosis: Intra-test reproducibility showed no significant differences in IFN-γ levels (mean difference = 2.08 IU/mL, 95% CI -1.28 to 5.44, P = .206).<h4>Conclusions</h4>With high sensitivity, the TB-Feron assay is a potential near-POC alternative to the QFT-Plus assay for diagnosing TB infection, but requires consideration of its suboptimal specificity.