| Antimicrobial Agent | Disk content | Zone Diameter Interpretative Criteria (nearest whole mm) | MIC Interpretative Criteria (µg/mL) | ||||
| S | I | R | S | I | R | ||
| Erythromycin | 15 µg | ≥21 | 16 - 20 | ≤15 | ≤0.25 | 0.5 | ≥1 |
| Clindamycin | 2 µg | ≥19 | 16 - 18 | ≤15 | ≤0.25 | 0.5 | ≥1 |