U.S. flag An official website of the United States government
  1. Home
  2. Drugs
  3. Development & Approval Process | Drugs
  4. Development Resources
  5. Cefazolin – Injection products
  1. Development Resources

Cefazolin – Injection products

Exceptions to the recognized standard of CLSI M100

  Minimum Inhibitory
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.

Back to Top