Table 2. Performance of four carbapenemase detection tests according to the type of carbapenemase and organism.
| Carbapenemase type | Enterobacteriaceae species (n) | MHT n (%) | mCIM n (%) | eCIM n (%) | CNPt n (%) | CNPt-direct n (%) |
|---|---|---|---|---|---|---|
| OXA-48-like N = 44 | 41 (93.2%) | 44 (100%) | 4 (9.1%) | 34 (77.3%) | 35 (79.5%) | |
| K. pneumoniae (39) | 37 (94.9%) | 39 (100%) | 4 (10.3%) | 31 (79.5%) | 31 (79.5%) | |
| E. coli (3) | 2 (66.7%) | 3 (100%) | 0 | 2 (66.7%) | 2 (66.7%) | |
| C. freundii (2) | 2 (100%) | 2 (100%) | 0 | 1 (50%) | 2 (100%) | |
| NDM N = 04 | 2 (50%) | 4 (100%) | 4 (100%) | 1 (25%) | 4 (100%) | |
| C. freundii (2) | 1 (50%) | 2 (100%) | 2 (100%) | 1 (50%) | 2 (100%) | |
| P. rettgeri (1) | 0 | 1 (100%) | 1 (100%) | 0 | 1 (100%) | |
| E. cloacae (1) | 1 (100%) | 1 (100%) | 1 (100%) | 0 | 1 (100%) | |
| OXA-48-like & NDM N = 04 | 4 (100%) | 4 (100%) | 0 | 4 (100%) | 4 (100%) | |
| K. pneumoniae (3) | 3 (100%) | 3 (100%) | 0 | 3 (100%) | 3 (100%) | |
| K. aerogenes (1) | 1 (100%) | 1 (100%) | 0 | 1 (100%) | 1 (100%) | |
| KPC N = 02 | K. pneumoniae (2) | 2 (100%) | 2 (100%) | 0 | 2 (100%) | 2 (100%) |