Table 1.

Performance of NG-Test^® and the Wantai ELISA immunoasay for SARS-CoV-2 antibody detection in Healthcare Workers (HCWs), Rennes University Hospital, France 2020.

		IgG	IgM	IgG or IgM
LFIA NG-Test®(vs RT-PCR)
	TP	42	42	42
	FN	9	9	9
	Sensitivity	82.5% [71.9%–92.3%]	82.5% [71.9%–92.3%]	82.5% [71.9%–92.3%]
	TN	58	58	58
	FP	1	1	1
	Specificity	98.3% [95.0%–100.0%]	98.3% [95.0%–100.0%]	98.3% [95.0%–100.0%]
Elisa Wantai (vs RT-PCR)
	TP	49	18	49
	FN	2	33	2
	Sensitivity	96.1% [90.8%–100%]	35.3% [22.2%–48.4%]	96.1% [90.8%–100%]
	TN	59	59	59
	FP	0	0	0
	Specificity	100% [93.4%–100%]	100% [93.4%–100%]	100% [93.4%–100%]

TP: true positive, FN: false negative, TN: true negative, FP: false positive.