Table 2. Accuracy indices for the rapid test BIOSYNEX COVID-19 assay for SARS-CoV-2 IgM and IgG detection compared to the MAGLUMI 2019-nCoV CLIA.

Biosynex Covid-19 BSS vs MAGLUMI 2019-nCov	SARS-CoV-2 IgM	SARS-CoV-2 IgG
Sensitivity (95%CI), %	83 (0.64-0.94)	82 (0.67-0.92)
Specificity (95%CI), %	88 (0.74-0.96)	93 (0.75-0.99)
PPV (95%CI) %	83 (0.64-0.94)	95 (0.82-0.99)
NPV (95%CI), %	88 (0.74-0.96)	75 (0.57-0.88)
LR+ (95%CI)	6.79 (2.93-15.69)	10.63 (2.79-40.57)
C-k (95%CI)	0.71 (0.54-0.87)	0.71 (0.54-0.87)
PPV - Positive predictive value. NPV - Negative predictive value. LR - Likelihood ratio. CI - Confidence interval. C-k - Cohen’s kappa.