FIGURE 3.

Accuracy of various serological tests for the identification of patients with previous COVID‐19. Receiver‐operating characteristics (ROC) curves of IgG or pan‐Ig responses against the nucleoprotein (N), the receptor‐binding domain of the SARS‐CoV‐2 spike glycoprotein (RBD), the domain 1 or 2 of the SARS‐CoV‐2 spike glycoprotein (S1/S2), and the extended RBD domain are shown. Consecutive health‐care workers and inpatients with suspected or possible previous COVID‐19 were prospectively included (n = 3658; prevalence 5.3%)