Table 1.

Performance of the 4-plex assay. Sensitivity and specificity of the luminex antibody assay for antigen in multiplex.

		AUC	95% CI	p value	cut off	Sensitivity %	95% CI	Specificity %	95% CI
IgM	S1	0.96	0.94–0.99	<0.0001	>201.90	83.87	72.79–91.00	95.00	83.50–99.11
	S2	0.88	0.81–0.94	<0.0001	>1437	56.45	44.09–68.06	97.50	87.12–99.87
	RBD	0.94	0.89–0.99	<0.0001	>2036	62.90	50.46–73.84	95.00	83.50–99.11
	N	0.81	0.71–0.91	<0.0001	>1404	58.06	45.676–9.52	95.00	83.50–99.11
IgG	S1	0.98	0.95–1.00	<0.0001	>335.70	96.77	88.98–99.43	97.50	87.12–99.87
	S2	0.97	0.94–1.00	<0.0001	>4396	100.00	94.17–100.00	95.00	83.50–99.11
	RBD	0.99	0.97–1.00	<0.0001	>1613	96.77	88.98–99.43	100.00	91.24–100.00
	N	1.00	1.00–1.00	<0.0001	>1114	100.00	94.17–100.00	100.00	91.24–100.00