WAYNE, Pa.--(BUSINESS WIRE)--Clinical and Laboratory Standards Institute (CLSI) recently published an updated document, Development of In Vitro Susceptibility Testing Criteria and Quality Control Parameters for Veterinary Antimicrobial Agents; Approved Guideline—Third Edition (M37-A3), which offers guidance for developing agar disk diffusion zones of inhibition, dilution MIC breakpoints, and quality control limits for antimicrobial susceptibility testing of aerobic bacteria isolated from animals.