Table 3.

Potential false-positive and false-negative rates after heat-inactivation for SARS-CoV-2 IgG and IgM Ab detection with indirect immunity-based kit produced by manufacturer B.

IgG Ab		56°C for 30 min		Total	56°C for 45 min		Total	60°C for 30 min		Total
		Po	Ne		Po	Ne		Po	Ne
Control	Po	20 (100.0%)	$0\; (0.0\%)$	20	20 (100.0%)	$0\; (0.0\%)$	20	20 (100.0%)	$0\; (0.0\%)$	20
	Ne	$0\; (0.0\%)$	0 (100.0%)	0	$0\; (0.0\%)$	0 (100.0%)	0	$0\; (0.0\%)$	0 (100.0%)	0
Total		20	0	20	20	0	20	20	0	20
IgM Ab		Po	Ne	Total	Po	Ne	Total	Po	Ne	Total
Control	Po	7 (100.0%)	$0\; (0.0\%)$	7	7 (100.0%)	$0\; (0.0\%)$	7	2 (28.6%)	$5\; (71.4\%)$	7
	Ne	$0\; (0.0\%)$	13 (100.0%)	13	$0\; (0.0\%)$	13 (100.0%)	13	$0\; (0.0\%)$	13 (100.0%)	13
Total		7	13	20	7	13	20	2	18	20

blue bold, false-negative; red bold, false-positive; Po, positive; Ne, negative.