Table 5 Descriptive statistics showing the effect of controlled variation of volumes of saliva in a 20 µl reaction.

From: Performance evaluation of a non-invasive one-step multiplex RT-qPCR assay for detection of SARS-CoV-2 direct from saliva

 

6 μL

7 μL

8 μL

9 μL

10 μL

CDC-N2 (FAM)

Number of replicates

3

3

3

3

3

Mean CT

33.38

33.61

32.92

33.72

34.25

Std. Deviation

0.227

0.612

0.921

1.505

0.302

Coefficient of variation

0.680%

1.821%

2.796%

4.463%

0.882%

Charité-E (HEX)

Number of replicates

3

3

3

3

3

Mean CT

32.25

32.77

32.00

32.40

33.70

Std. Deviation

0.106

0.659

0.609

1.228

0.475

Coefficient of variation

0.329%

2.011%

1.902%

3.791%

1.408%