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Table 2 Tabulation of results of Aptima and the TaqPath on diluted clinical samples

From: Assessment of the clinical and analytical performance of the Aptima SARS-CoV-2 assay using the VALCOR protocol

Control dilution

TaqPath N-gene (Cq value)

Aptima results

Alinity m (CN value)

Undiluted (1)

1:2

25.59

Positive

 

1:10

28.70

Positive

 

1:20

29.93

Positive

 

1:50

29.26

Positive

 

Undiluted (2)

1:2

25.64

Positive

 

1:10

28.93

Positive

 

1:20

30.44

Positive

 

1:50

31.08

Positive

 

Undiluted (3)

1:2

25.52

Positive

 

1:10

28.82

Positive

 

1:20

29.11

Positive

 

1:50

30.66

Positive

 

Undiluted (4)

1:2

23.33

Positive

 

1:10

26.53

Positive

 

1:20

27.66

Positive

 

1:50

28.89

Positive

 

Undiluted (5)

1:2

28.20

Positive

 

1:10

31.41

Positive

 

1:20

ND*

Positive

32.81

1:50

ND*

Positive

34.07

Undiluted (6)

1:2

24.36

Positive

 

1:10

27.41

Positive

 

1:20

27.57

Positive

 

1:50

28.67

Positive

 

Undiluted (7)

1:2

28.32

Positive

 

1:10

32.00

Positive

 

1:20

ND*

Positive

32.59

1:50

ND*

Positive

34.41

Undiluted (8)

1:2

24.20

Positive

 

1:10

26.91

Positive

 

1:20

28.27

Positive

 

1:50

29.47

Positive

 

Undiluted (9)

1:2

26.04

Positive

 

1:10

29.13

Positive

 

1:20

29.43

Positive

 

1:50

30.27

Positive

 

Undiluted (10)

1:2

25.25

Positive

 

1:10

28.06

Positive

 

1:20

29.09

Positive

 

1:50

30.11

Positive

 
  1. ND Not detected, Cq Quantitative cycle, CN Cycle Number, N nucleocapsid protein of SARS-CoV-2
  2. *Samples that were not detected on TaqPath were retested with Alinity m