Table 3.

List of antibiotics and diameter of zone inhibition standard [30].

Antibiotic Name	Disc Concentration (μg)	Diameter of Zone of Inhibition
		Resistant <or = nm	Intermediate nm	Susceptible = or>nm
1. Erythromycin	15	≤13	14-22	≥23
2. Penicillin	10	≤19	20-27	≥28
3. Vancomycin	30	≤14	15-16	≥17
4. Trimethoprim- sulfamethoxazole	25	≤10	11-15	≥16
5. Gentamicin	10	≤12	13-14	≥15
6. Oxacillin	1	≤10	11-12	≥13
7. Tetracycline	30	≤14	15-18	≥19
8. Chloramphenicol	30	≤12	13-17	≥18
9. Moxifloxacin	5	≤20	21-23	≥24
10. Norfloxacin	10	≤12	13-16	≥17
11. Nitrofurantoin	30	≤14	15-16	≥17
12. Ciprofloxacin	5	≤15	16-20	≥21
13. Rifampin	5	≤16	17-19	≥20
14. Doxycycline	30	≤12	13-15	≥16
15. Cefixime	5	≤15	16-18	≥19
16. Minocycline	30	≤14	15-18	≥19
17. Levofloxacin	5	≤15	16-18	≥19
18. Clindamycin	2	≤14	15-20	≥21