TABLE 1.

Cycle threshold values and genome copy numbers of three SARS-CoV-2 genes from specimens with and without isolation of the virus

Gene	Sample (n)	CT value			Log10 genome copies/ml
		Mean ± SEM	Highest	Lowest	Mean ± SEM	Highest	Lowest
Culturable (n = 23)
nsp12	Total (23)	23.90 ± 0.78	31.47	17.75	7.37 ± 0.20	8.98	5.40
	OP (12)	24.21 ± 0.89	31.47	19.69	7.29 ± 0.23	8.47	5.40
	NP (9)	24.67 ± 1.37	29.87	18.94	7.17 ± 0.36	8.67	5.82
	SP (2)	18.57 ± 0.82	19.38	17.75	8.76 ± 0.21	8.98	8.55
E	Total (23)	22.39 ± 0.75	31.46	16.85	8.21 ± 0.18	9.55	6.01
	OP (12)	22.79 ± 1.01	31.46	18.85	8.11 ± 0.24	9.07	6.01
	NP (9)	22.89 ± 1.19	28.74	18.36	8.09 ± 0.28	9.19	6.67
	SP (2)	17.77 ± 0.92	18.68	16.85	9.33 ± 0.22	9.55	9.11
N	Total (21)	27.29 ± 0.77	35.20	22.14	7.87 ± 0.21	9.30	5.67
	OP (11)	27.21 ± 0.85	32.81	23.13	7.89 ± 0.24	9.03	6.33
	NP (8)	28.01 ± 1.61	35.20	22.14	7.67 ± 0.45	9.30	5.67
	SP (2)	24.8 ± 2.07	26.86	22.73	8.56 ± 0.58	9.14	7.99
Nonculturable (n = 37)
nsp12	Total (34)	29.26 ± 0.69	36.52	22.32	5.98 ± 0.18	7.78	4.09
	OP (15)	30.32 ± 1.03	36.52	23.47	5.70 ± 0.27	7.49	4.09
	NP (15)	28.06 ± 0.91	35.60	23.92	6.29 ± 0.24	7.37	4.32
	SP (4)	29.74 ± 2.78	34.43	22.32	5.85 ± 0.72	7.78	4.63
E	Total (37)	28.92 ± 0.65	38.33	20.89	6.62 ± 0.16	8.57	4.34
	OP (17)	29.61 ± 0.97	38.33	22.61	6.46 ± 0.23	8.15	4.34
	NP (15)	28.22 ± 0.97	36.31	24.39	6.79 ± 0.24	7.72	4.83
	SP (5)	28.68 ± 2.13	32.93	20.89	6.68 ± 0.52	8.57	5.65
N	Total (31)	31.49 ± 0.59	42.47	26.39	6.70 ± 0.17	8.12	3.64
	OP (13)	32.81 ± 0.99	42.47	29.55	6.33 ± 0.28	7.54	3.64
	NP (13)	29.86 ± 0.62	33.34	26.39	7.15 ± 0.17	8.12	6.18
	SP (5)	32.27 ± 1.60	36.45	26.89	6.48 ± 0.45	7.98	5.32