Table 2.: A list of the sixteen tested antimicrobials, their classes, the concentrations range used for susceptibility testing, and the breakpoints used for each antimicrobial.
| Antimicrobial Class |
Antimicrobial |
MIC Range (µg/ml) |
Breakpoint (µg/ml) |
| Aminoglycosides |
Gentamicin |
4 - 64 |
8 |
| Kanamycin |
32 - 512 |
64 |
| Streptomycin |
48 - 512 |
64 |
| Beta-lactams |
Amoxicillin |
16 - 256 |
32 |
| Ampicillin |
16 - 256 |
32 |
| Cephalothin |
16 - 256 |
32 |
| Fluoroquinolones |
Ciprofloxacin |
2 - 32 |
4 |
| Lincosamides |
Clindamycin |
4 - 64 |
8 |
| Macrolides |
Azithromycin |
4 - 64 |
8 |
| Erythromycin |
16 - 256 |
32 |
| Tilmicosin |
4 - 64 |
8 |
| Phenicols |
Chloramphenicol |
16 - 256 |
32 |
| Quinolones |
Nalidixic Acid |
32 - 512 |
64 |
| Tetracyclines |
Doxycycline |
4 - 64 |
8 |
| Oxytetracycline |
1 - 16 |
2 |
| Tetracycline |
8 - 128 |
16 |