Table 2 RT-qPCR amplification parameters for Novel Coronavirus (2019-nCoV) Real Time Multiplex RT-PCR Kit (Liferiver), Vitassay qPCR SARS-CoV-2 (Vitassay) and TaqPath COVID‑19 CE-IVD RT-PCR Kit (Thermo Fisher Scientific).

From: Commercially available SARS-CoV-2 RT-qPCR diagnostic tests need obligatory internal validation

 

Efficiency (%)

R2

y-intercept

Mean Ct (SD) for 106 – 101 viral RNA copies per reaction

106

105

104

103

102

101

Liferiver

92

0.999

39

18.251 (0.045)

21.640 (0.135)

25.226 (0.171)

28.612 (0.242)

32.306 (0.143)

35.794 (0.173)

Vitassay

103

0.996

40

20.847 (0.220)

24.041 (0.069)

27.440 (0.207)

30.606 (0.174)

34.388 (0.120)

36.724 (0.421)

TaqPath

100

0.998

36

16.298 (0.162)

19.509 (0.423)

23.130 (0.119)

26.584 (0.163)

29.495 (0.144)

32.858 (0.201)

  1. R2—the correlation coefficient, SD—standard deviation.