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| Breakpoints Used (∅ mm) | ||
| Drug class | Antibiotic | Disc Content µg | Susceptible | Resistant |
| β-lactam antibiotic | Amoxicillin-clavulanic acid | 20/10 | ∅ ≥ 19 | ∅ < 19 |
| Penicillin | Amoxicillin | 10 | ∅ ≥ 19 | ∅ < 19 |
| Cephalosporin | Cefotaxime | 30 | ∅ ≥ 20 | ∅ < 17 |
| Cephamycins | Cefoxitin | 30 | ∅ ≥ 18 | ∅ < 18 |
| Carbapenems | Imipenem | 10 | ∅ ≥ 22 | ∅ < 19 |
| Fluoroquinolone | Ciprofloxacin | 10 | ∅ ≥ 25 | ∅ < 22 |
| Aminoglycoside | Amikacin | 25 | ∅ ≥ 18 | ∅ < 18 |
| Phenicol | Chloramphenicol | 30 | ∅ ≥ 17 | ∅ < 17 |
| Nitrofurans | Nitrofurantoin | 300 | ∅ ≥ 11 | ∅ < 11 |
| Macrolides | Azithromycin | 15 | ∅ ≥ 17 | ∅ < 17 |
| Folate pathway/acid inhibitor | Trimethoprim + Sulfamethoxazole | 1, 23 - 25, 75 | ∅ ≥ 14 | ∅ < 11 |
| Tetracycline | Doxycycline | 30 | ∅ ≥ 14 | ∅ < 10 |