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In this section: Development Resources

Cefazolin – Injection products

FDA Identified Breakpoints

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales	M-100 standard is recognized

S = Susceptible; I = Intermediate; R = Resistant
Interpretive criteria are based on a dose of 2 g every 8 hr.

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

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