Table 3.

Performance of commercial kits using treated saliva as a template for RT-qPCR.

Commercial kit	Sample size, n	Invalid specimens, n	Concordant to reference, n	Invalid rate, %	Overall agreement, %
Maccura	11	0	11	0.00	100.00
Fosun	12	1	11	8.33	100.00
Ardent	11	0	10	0.00	90.91
SD Biosensor	13	1	11	7.69	91.67
Biosewoom	11	1	8	9.09	80.00
Fortitude	11	1	7	9.09	70.00
3S	10	0	4	0.00	40.00
Vazyme	10	4	2	40.00	33.33

Rates of the invalid and overall agreement were calculated as compared to results from the reference, Detection Kit for 2019 Novel Coronavirus (2019-nCoV) by Da An Gene Co.