Figure 3.

SARS‐CoV‐2 S, RBD and N antibody distribution by serostatus cut points (dashed lines) in samples from donors according to known SARS‐CoV‐2 status (a) and number of PCR‐positive samples that were seronegative versus seropositive for both S and N (b) ^†One measurement failed run validity criteria. In a, GMT values for each group are shown as solid‐coloured lines. In b, RBD versus N distribution is the same as S versus N and is not shown. AU, arbitrary units; ECL, electrochemiluminescence; GMT, geometric mean titre; N, nucleocapsid protein; PCR, polymerase chain reaction; RBD, receptor‐binding domain; S, spike protein; SARS‐CoV‐2, severe acute respiratory syndrome coronavirus 2.