Joint Detection of Serum IgM/IgG Antibody Is an Important Key to Clinical Diagnosis of SARS-CoV-2 Infection

Table 2

Clinical sensitivity of SARS-CoV-2 IgM and SARS-CoV-2 IgG.

Days	Number of samples	SRAS-CoV-2 IgM				SRAS-CoV-2 IgG
		N	P	Clin Sen (%)	95% CI	N	P	Clin Sen (%)	95% CI
<7 days	12	3	9	75.00	(46.8%, 91.1%)	2	10	83.33	(55.2%, 95.3%)
7–14 days	25	3	22	88.00	(70.0%, 95.8%)	0	25	100.00	(86.7%, 100.0%)
>14 days	31	2	29	93.55	(79.3%, 98.2%)	0	31	100.00	(89.0%, 100.0%)
Total	68	8	60	88.24	(78.5%, 93.9%)	2	66	97.06	(89.9%, 99.2%)

Days: days since the onset of symptoms; N: negative; P: positive; Clin Sen: clinical sensitivity.