Table 1. Clinical evaluation of DP-RT-LAMP assay and comparable PCR assay.
Sample | LAMP Tt (min) | GPDx CoViDx One PCR Ct | ||||||
---|---|---|---|---|---|---|---|---|
CoV2-W3 | RNase P | Result | RdRP | N | R | RNase P | Result | |
1 | 32.7 | 24.0 | Positive | 33.13 | 35.78 | 33.26 | 29.15 | Low Positive |
2 | 10.9 | 18.0 | Positive | 25.56 | 27.45 | 25.25 | 28.21 | Positive |
3 | 41.5 | 16.2 | Positive | 30.99 | 34.24 | 31.65 | 25.55 | Positive |
4 | 12.4 | 16.5 | Positive | 30.85 | 32.75 | 31.31 | 29.81 | Positive |
5 | 11.0 | 16.9 | Positive | 29.62 | 31.84 | 29.72 | 29.82 | Positive |
6 | 16.7 | 17.7 | Positive | 31.49 | 33.73 | 32.18 | 31.14 | Positive |
7 | 12.7 | 14.7 | Positive | 30.6 | 32.12 | 30.99 | 29.25 | Positive |
8 | 23.7 | 15.0 | Positive | 32.65 | 35.73 | 33.31 | 29.5 | Low Positive |
9 | 10.3 | 15.6 | Positive | 25.67 | 27.71 | 25.75 | 28.99 | Positive |
10 | 13.0 | 16.7 | Positive | 31.94 | 34.87 | 32.9 | 27.35 | Positive |
11 | 9.0 | 29.0 | Positive | 23.77 | 25.29 | 23.62 | 27.51 | Positive |
LAMP assay: Swab elution in 200 μL buffer. 5 μL input in 25 μL reaction
PCR assay: With RNA extraction (200 μL VTM input, elution volume of 35 μL), 5 μL Input 15 μL reaction.