TABLE 1.

Limits of detection of the Xpert Xpress SARS-CoV-2 test using SARS-CoV-2 in nasopharyngeal-swab clinical matrix

Concn (PFU/ml)	No. positive/no. of replicates	Mean CT		Hit rate (%)
		E	N2
0.0200	22/22	35.2	38.9	100
0.0100	22/22	37.1	40.1	100
0.0050	21/22	38.2	41.0	95.5
0.0020	10/22	41.0	41.7	45.4
0.0010	7/22	39.1	41.8	31.8
0.0005	2/22	39.5	41.3	9.1
0.0001	1/22	43.5	42.5	4.5