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Table 2 Assay performance of phage DNA detection-based Taqman qPCR and gltA-based Taqman qPCR for spiked clinical swab and bronchoalveolar fluid samples

From: Evaluation of a direct phage DNA detection-based Taqman qPCR methodology for quantification of phage and its application in rapid ultrasensitive identification of Acinetobacter baumannii

LB8

 

Taqman/gltA

Phage DNA detection-based Taqman qPCR

Simulate samples

Swab

Bronchoalveolar fluid

Swab

Bronchoalveolar fluid

Phage

Time(h)

0

3

0

3

3

3

0

9

 

23.6 ± 0.5

22 ± 0.1

25.2 ± 0.6

22.5 ± 1.0

22

14.7 ± 0.4

31.2 ± 0.4

 

Ct

    

9.2

16.5

 

6

 

32.7 ± 0.9

28.5 ± 0.3

30.3 ± 0.7

29.3 ± 0.6

28.1 ± 0.4

25.5 ± 1.2

 
 

Ct

    

3.1

5.6

 

3

 

U

36.1 ± 0.9

U

35.5 ± 1.5

26.5 ± 1.7

29.2 ± 0.1

 
 

Ct

    

4.7

2.0

 

1

 

U

U

U

U

29.8 ± 0.8

30.4 ± 1.2

 
 

Ct

    

1.4

0.8

 
  1. Bold indicates 9, 6 ,3 and 1 mean that the initial bacteria amount in specimens is 9/6/3/1 log concentration(CFU/mL)