Diagnostic Performance of Three ELISAs for Detection of Antibodies against SARS-CoV-2 in Human Samples

Figure 3

Heatmap showing the average reactivities to the three antigens in individual patients. The heatmap was constructed using only the 69 patients with a positive diagnosis for COVID-19 by RT-qPCR, and the samples were collected between 15 to 30 days after a positive molecular diagnosis. The absorbance values found for each protein were normalized based on the cutoff point found for each protein (N, S, and RBD fraction). The color gradient bar represents lower reactivity against antigens in dark blue and higher reactivity against antigens in dark red.