Table 1.

Limit of SARS-CoV-2 target sequence detection with high-sensitivity stool RT-PCR (n = 59)

Target	Percent positivity (%)				Mean CTa (SD)
	N1	N2	RNAseP	Overall	N1	N2	RNAseP
RNA conc. (Copies/μL)
140 (n = 5)	100	100	100	100	29.1 (1.2)	31.1 (1.6)	32.5 (1.4)
111 (n = 9)	100	100	89	100	30.3 (1.6)	32.3 (0.8)	31.0 (4.2)
56 (n = 10)	100	100	90	100	31.6 (1.3)	34.5 (0.8)	33.8 (3.9)
28 (n = 5)	100	100	100	100	32.6 (0.9)	35.0 (0.9)	35.7 (2.4)
6 (n = 10)	80	90	100	100	34.4 (1.1)	36.2 (1.5)	34.5 (1.2)
3 (n = 10)	60	70	90	90	34.3 (0.5)	36.2 (1.1)	34.3 (1.1)
0.6 (n = 10)	40	30	90	50	34.0 (0.7)	36.2 (1.7)	34.4 (1.6)

C_T, cycle threshold; RT-PCR, reverse transcriptase polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

^aCalculated for detected samples.