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

Penicillin – Injection products

Recognized Interpretive Criteria

 

Minimum Inhibitory
Concentrations

(mcg/mL)

Disk Diffusion
(zone diameter in mm)

Pathogen

S

I

R

S

I

R

Staphylococcus spp.

M100 standard is recognized

Enterococcus spp.

M100 standard is recognized

Streptococcus pneumoniae
(meningitis)

M100 standard is recognized

-

-

-

Streptococcus pneumoniae
(non-meningitis)

M100 standard is recognized

-

-

-

Streptococcus spp. β-
Hemolytic Group

M100 standard is recognized

Streptococcus spp.
Viridans group

M100 standard is recognized

-

-

-

Neisseria gonorrhoeae

M100 standard is recognized

Bacillus anthracis

M45 standard is recognized

-

-

-

Listeria monocytogenes

M45 standard is recognized

-

-

-

S = Susceptible; I = Intermediate; R = Resistant