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Comparison of the Rapid Polymyxin™ NP Test and broth microdilution to detect colistin resistance.
| Broth microdilution (n) | ||||
|---|---|---|---|---|
| Resistant | Susceptible | Total | ||
| Rapid Polymyxin™ NP Test (n) | Resistant | 27 | 8 | 35 |
| Susceptible | 11 | 62 | 73 | |
| Total | 38 | 70 | 108a | |
10 isolates were excluded the due to non-evaluable results in Rapid Polymyxin™ NP Test (no growth in the growth control) and 12 isolates were excluded due to non-interpretable results in broth microdilution (skipped wells).
