Table 3.

Saliva-dry-LAMP clinical samples compared to reference RT-PCR methods (E gene and N2 gene) for saliva.

Saliva-Dry LAMP (S + RdRP)	RT-PCR on Saliva RNA extracts (E and N2 gene)		Total
	Positive	Negative
Positive	28	0	28
Negative	2	33	35
Total	30	33	63
PPA	93.33% (95% CI 77.93–99.18%)
NPA	100.00% (95% CI 89.42–100.00%)

Saliva-dry-LAMP was performed using commercially-available instruments and lyophilized RT-LAMP reactions from Pro-Lab Diagnostics Inc.

PPA positive percent agreement, NPA negative percent agreement, S spike, RdRP RNA-dependent RNA polymerase.