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In this section: Development Resources

Piperacillin Tazobactam – Injection products

Exceptions or additions to the recognized standards

	Minimum Inhibitory Concentrations (mcg/mL)				Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales^a	≤8/4	16/4	≥32/4	≥25	21-24	≤20

S = Susceptible; I = Intermediate; R = Resistant

^a Clinical efficacy was shown for E. coli and K. pneumoniae

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

Other Non-Enterobacterales

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