From: IgG antibody titers against SARS-CoV-2 nucleocapsid protein correlate with the severity of COVID-19 patients
Colloidal gold antibody detection kit
r-SARS-CoV-2-N based IgG ELISA
Total
Positive Negative
Positive
174
0
Negative
6
182
188
180
362
Concordance a: 98.3%
Sensitivity b: 100%
Specificity c: 96.8%