Fig. 1From: Comparison of six antibody assays and two combination assays for COVID-19The positivity rate of each assay on each day from symptom onset. a The positivity rate of the pan-immunoglobulin assays [Elecsys (orange line) and SuperFlex_Ab (cyan line)] and combination assays [SuperFlex_any (purple line) and iFlash_any (red line)]. b The positivity rate of the IgM assays [SuperFlex_IgM (aqua line) and iFlash_IgM (pink line)] and IgG assays [SuperFlex_IgG (purple line) and iFlash_IgG (red line)]Back to article page