Rifampin - Oral, Injection products

Recognized Interpretive Criteria

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Neisseria meningitidis	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:

Staphylococcus spp.

Enterococcus spp.

Haemophilus influenzae and Haemophilus parainfluenzae

Streptococcus pneumoniae