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In this section: Development Resources

Cefazolin – Injection products

Exceptions to the recognized standard of CLSI M100

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacteriaceae	≤1	2	≥4	-	-	-

S = Susceptible; I = Intermediate; R = Resistant
Interpretive criteria are based on a dose of 1 g every 8 hr.

Separate susceptibility test interpretive criteria for Enterobacteriaceae for therapy of uncomplicated urinary tract infections are not recognized at this time.