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

Staphylococcus aureus

≤ 4

8

≥ 16

≥ 15

13-14

≤ 12

S = Susceptible; I = Intermediate; R = Resistant

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

Acinetobacter spp.

Other Non-Enterobacterales

  • Content current as of:

    10/23/2025

Source