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Table 2 Performance of Carba 5 assay and Xpert Carba-R assay using isolates from the prospective analysis

From: Application of a multiplex immunochromatographic assay for rapid identification of carbapenemases in a clinical microbiology laboratory: performance and turn-around-time evaluation of NG-test Carba 5

Target carbapenemase

Number of isolates

Carba 5

 

Xpert Carba-R

 

% sensitivity (95% CI)

% specificity (95% CI)

% sensitivity(95% CI)

% specificity (95% CI)

Class A

 KPC

32

100 (89.11–100)

100 (78.20–100)

100 (89.11–100)

100 (78.20–100)

Class B

 NDM

4

100 (39.76–100)

100 (91.78–100)

100 (39.76–100)

100 (91.78–100)

Class A + B

 KPC + NDM

1

100 (2.50–100)

100 (92.29–100)

100 (2.50–100)

100 (92.29–100)

Overall

37

100 (90.51–100)

100 (69.15–100)

100 (90.51–100)

100 (69.15–100)

Non carbapenemase producers

10