IL6 and tuberculosis: Stimulating the macrophages startsan inflammatory response and releases IL-6, which can be used as adiagnostic biomarker for TB.75 Althoughno established cutoff value for IL-6 seems to be found, the workingrange of experiments is found to be within the pg/mL levels, i.e.,4.7–300 pg/mL for TB.76 Others reported4.3 pg/mL (linear range 0.5–24 pg/mL) with healthy controlsof 0.05 pg/mL.77 Likewise, another reported22.3 pg/mL cutoff value presented a sensitivity of 77.78% and a specificityof 74.36%.78 The suggested cutoff valuefor TB is the recommended 22.3 pg/mL.