Table 1.

Shows the summary statistics of rt-PCR+ subject specimens at the respective primary antibody peaks whose Mean OD was higher than the assay LOD.

Variable	n	Min	Max	Median	IQR	Mean
S-IgG	106	0.321	1.947	1.074	0.742, 1.406	1.088
S-IgM	62	0.401	1.919	1.031	0.606, 1.329	1.000
S-IgA	51	0.226	1.518	0.486	0.339, 0.794	0.597
N-IgG	104	0.247	2.405	0.789	0.558, 1.267	0.951
N-IgM	52	0.090	0.726	0.182	0.130, 0.273	0.241
N-IgA	37	0.220	2.014	0.422	0.258, 1.401	0.797
RBD-IgG	85	0.140	1.326	0.555	0.355, 0.784	0.608
RBD-IgM	55	0.242	1.211	0.442	0.358, 0.691	0.549
RBD-IgA	48	0.107	1.756	0.254	0.159, 0.330	0.343

These were used as positive specimens for the computation of IgG, IgM, and IgA cut-off values for binding antibody detection.