“…The most common assay used to detect anti-IFN-c AAbs is the enzyme-linked immunosorbent assay (ELISA), in indirect, 2,12,17,18,21,23,[36][37][38][39][40][41] sandwich, 14,16,32,42 or inhibitory 2,3,8,17,23,32,37,43,44 assay format. For the ELISAbased method, the results could be reported qualitatively (positive or negative) or quantitatively as optical density (OD), 39 titer, 43 or through calculations of arbitrary units 21 or ELISA units (EU). 36,39 The easy-to-use, low-cost Dot ELISA strip, which can be read directly on the strip, was developed as a point-of-care screening tool in remote settings.…”