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Positivity of inhibitor‐substrate combinations on DDS used for detecting MBL among 69 IRPA isolates.
| Combinations | N° of positive strains | % |
| IMP / MAA | 19/53 | 35.8% |
| IMP / MPA | 7/53 | 13.2% |
| IMP / EDTA | 52/53 | 98.1% |
| CAZ / MAA | 27/53 | 50.9% |
| CAZ / MPA | 23/53 | 43.4% |
| CAZ / EDTA | 47/53 | 88.7% |
IMP: imipenem; CAZ: ceftazidime; EDTA: etilenodiaminotetracetic acid; MAA: mercaptoacetic acid; MPA: 2‐mercaptopropionic acid.
