Fig. 2. SARS-CoV-2 N-protein and anti-SARS-CoV-2 IgG in capillary blood (DBS) differentiate COVID PCR− from COVID PCR+ donors.

a NP-protein in DBS. b IgG in DBS. Data are binned by day from PCR result. First timepoint (closed symbol) and subsequent timepoints (open symbol) are shown. Data number is denoted as n = unique donors (total data points). Lines denote median value. c N-protein over three collections. d IgG over three collections. Lines connect individual donors over multiple collections for PCR− (blue symbols), PCR+ with symptoms (red symbols), and PCR+ without symptoms (open red symbols) DBS. PCR+ n = donors without symptoms (total donors); PCR− n = total donors. Donor 12 is highlighted.