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In this section: Development Resources

Ampicillin – Oral, Injection Products

Recognized Interpretive Criteria

	Minimum Inhibitory Concentrations (mcg/mL)			Disk Diffusion (zone diameter in mm)
Pathogen	S	I	R	S	I	R
Enterobacterales^a	M100 standard is recognized
Enterococcus spp.	M100 standard is recognized
Haemophilus influenzae and Haemophilus parainfluenzae	M100 standard is recognized
Streptococcus spp. β- Hemolytic Group	M100 standard is recognized
Streptococcus spp. Viridans group	M100 standard is recognized			-	-	-
Neisseria meningitidis	M100 standard is recognized			-	-	-

^aIncluding Salmonella spp. and Shigella spp.

S = Susceptible; I = Intermediate; R = Resistant

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