Table 2
E test MICs for CCUG reference strains performed at the beginning, midway, and at the end (runs 1–3) of our study
| QC strain | Clarithromycin MIC μg/ml | Metronidazole MIC μg/ml | Amoxicillin MIC μg/ml |
|---|---|---|---|
| *Mutant colonies inside the zone. | |||
| CCUG, culture collection of the University of Gotenberg; MIC, minimum inhibitory concentration. | |||
| Resistance breakpoint | >2 | >8 | >0.5 |
| CCUG 38770 | |||
| Expected result | 0.012–0.25 | >256 | 0.015 |
| Run 1 | 0.38 | >256 | 0.016 |
| Run 2 | 0.38 | >256 | 0.016 |
| Run 3 | 0.25 | >256 | 0.016 |
| CCUG 38771 | |||
| Expected result | 0.03 | 0.5 | <0.015 |
| Run 1 | 0.023 | 1 | <0.016 |
| Run 2 | 0.023 | 0.19 | <0.016 |
| Run 3 | 0.023 | 0.19* | <0.016 |
| CCUG 38772 | |||
| Expected result | 2 | 32–64 | <0.015 |
| Run 1 | 6 | >256 | <0.016 |
| Run 2 | 0.75 | 128 | <0.016 |
| Run 3 | 6 | 64 | <0.016 |
