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Table 2 In vitro analysis of primer specificity of the primers used in this study

From: In silico vs in vitro analysis of primer specificity for the detection of Gardnerella vaginalis, Atopobium vaginae and Lactobacillus spp.

Target

Probe

Annealing temp(°C)

No. of target strains detecteda

Sensitivity (%)b

No. of non-target strains detecteda

Specificity (%)b

Reference

G. vaginalis

Gard154-454

60

3 (from 3)

100.0

0 (from 6)

100.0

This study

  

62

12 (from 12)

100.0

0 (from 34)

100.0

 
 

GV1 + 3

60

3(from 3)

100.0

0 (from 6)

100.0

[15]

  

62

10 (from 12)

83.3

0 (from 34)

100.0

 
 

Gv1 + 2

60

3 (from 3)

100.0

0 (from 6)

100.0

[13]

  

62

11 (from 12)

91.7

0 (from 34)

100.0

 

A. vaginae

Atop109-329

60

3 (from 3)

100.0

5 (from 6)

16.7

This study

  

62

12 (from 12)

100.0

15 (from 24)

37.5

 
  

66

12 (from 12)

100.0

3 (from 34)

91.2

 
 

AtovagRT3

60

12 (from 12)

100.0

1 (from 24)

95.8

[11]

  

62

12 (from 12)

100.0

2 (from 34)

94.1

 
 

Atop167-587

60

2 (from 3)

66.7

0 (from 6)

100.0

[10]

  

62

11 (from 12)

91.6

4 (from 34)

88.3

 

Lactobacillus spp.

AM Lacto

60

2 (from 12)

16.7

1 (from 24)

95.8

This study

  

58

2 (from 12)

16.7

3 (from 34)

91.2

 
 

New Lacto

60

5 (from 12)

41.7

18 (from 34)

47,1

[16]

  

62

1 (from 12)

8.3

8 (from 24)

66.7

 
 

S21 + A19

60

5 (from 12)

41.7

24 (from 24)

0

[17]

  

62

6 (from 12)

50.0

34 (from 34)

0

 
  1. aCalculated using ProbeMatch (last accession, May 2012) with the following data set options: Strain – Both; Source – Both; Size – > 1200 bp; Quality – Both.
  2. bFormula: Specificity = (nts/Tnts)*100 (nts: number of non-target strains undetected, Tnts: total number of non-target strains tested).
  3. Sensitivity = (ts/Tts)*100 (ts: number of target strains detected, Tts: total number of target strains tested).