IFNG and tuberculosis: The rdESAT-6 and rCFP-10 (Cy-Tb) injection (‘Cy-Tb’), a TB-specific antigen skin test and STANDARD F TB-Feron FIA (‘Standard F TB’) measuring interferon-gamma by fluorescence immunoassay assay are two novel tools for the diagnosis of TB infection which offer advantages compared with current tests in low-resource settings and reduced costs to both health systems and TB-affected people.