Skip to main content

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