Rapid, Multispecies Detection of SARS-CoV-2 Antibodies via a Meta-Surface Plasmon Resonance Biosensor

Figure 4

PEI-GNPs MetaSPR biosensor analytical performance: (a) detection of SARS-CoV-2 S-trimer-binding antibody via the PEI-GNPs MetaSPR biosensor assay from a panel of 315 serum samples; (b) ROC curve based on the obtained data; (c) nine intraplate replicates, including negative, weak, and strong positive sera from cats, dogs, and minks, analyzed in the PEI-GNPs MetaSPR biosensor; (d) nine interplate replicates, including negative, weak, and strong positive sera from cats, dogs, and minks, analyzed in the PEI-GNPs MetaSPR biosensor. Points represent individual samples.

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