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Table 3 Legionella pneumophila determination in collaborative trial, Log (CFU/9 mL) (by participant no.) a

From: Fast immunosensing technique to detect Legionella pneumophila in different natural and anthropogenic environments: comparative and collaborative trials

  

Culture results

Immunomagnetic results

Level of spikingbLog10CFU/9 mL

Pill

Culture count log10CFU/9 mLc

Estimated magnitude order log10CFU/9 mL

Qualitative resultsd

  

1

2

3

4

5

6

7

8

9

10

11

1

2

3

4

5

6

7

8

9

10

11

1

2

3

4

5

6

7

8

9

10

11

0

P6

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

A

A

A

A

A

A

A

A

A

A

A

 

P8

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

A

A

A

A

A

A

A

A

A

A

A

2.23

P4

2.83

2.22

2.21

2.47

2.57

2.11

2.38

2.23

2.73

1.98

2.32

3.0

<3.0

3.0

<3.0

<3.0

<3.0

2.0

2.0

3.0

2.0

3.0

P

P

P

P

P

P

P

P

P

P

P

 

P7

2.11

2.16

2.36

2.25

2.13

2.11

2.10

2.01

2.17

1.90

2.32

<4.0

<3.0

<4.0

<4.0

<3.0

3.0

3.0

2.0

<4.0

2.0

3.0

P

P

P

P

P

P

P

P

P

P

P

2.88

P1

3.07

2.86

3.12

3.19

3.04

1.99

2.99

2.96

2.69

2.78

2.85

4.0

3.0

3.0

<4.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

P

P

P

P

P

P

P

P

P

P

P

 

P3

3.13

2.90

3.11

3.13

3.07

2.29

2.61

2.51

2.77

2.57

2.77

3.0

3.0

3.0

<4.0

3.0

2.0

3.0

2.0

<4.0

3.0

3.0

P

P

P

P

P

P

P

P

P

P

P

3.82

P2

4.01

4.23

4.03

3.93

3.76

3.59

3.49

3.56

3.21

3.59

4.22

4.0

>4.0

>4.0

<4.0

4.0

>4.0

4.0

3.0

4.0

>4.0

4.0

P

P

P

P

P

P

P

P

P

P

P

 

P5

3.92

4.20

4.30

3.64

3.63

3.94

3.77

3.66

3.97

3.61

3.95

4.0

4.0

4.0

4.0

4.0

>4.0

4.0

3.0

4.0

>4.0

>4.0

P

P

P

P

P

P

P

P

P

P

P

 

P9

3.33

4.20

3.91

3.89

3.92

3.71

3.48

3.63

3.97

2.91

3.99

4.0

4.0

4.0

4.0

4.0

>4.0

>4.0

>4.0

3.0

4.0

4.0

P

P

P

P

P

P

P

P

P

P

P

  1. a This table includes only results from participating laboratories that were not excluded due to obvious deviation from the trial protocol.
  2. b Concentrations calculated from the results provided by the 11 participating laboratories, assigned to the used reference materials (pills).
  3. c ND, not detected.
  4. d A, absence; P, presence.