Gentamicin – Injection products

Recognized Interpretive Criteria

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales	≤ 4	8	≥ 16	≥ 15	13 – 14	≤ 12
Pseudomonas aeruginosa	≤ 4	8	≥ 16	≥ 15	13 – 14	≤ 12
Staphylococcus spp.	M100 standard is recognized

S = Susceptible; I = Intermediate; R = Resistant

Exceptions to the recognized standard of CLSI M100

For the bacteria listed below, susceptibility test interpretive criteria are not recognized at this time:

Acinetobacter spp.

Other Non-Enterobacterales