scope:

The data in the tables are valid only if the methodologies in CLSI VET01¹ are followed. CLSI VET01¹ contains information about disk and dilution susceptibility test procedures for aerobic and facultatively anaerobic bacteria. Clinicians need information from the microbiology laboratory for treating and/or confirming treatment decisions for their patients with bacterial infections and depend heavily on this information for treating their seriously ill patients. The clinical importance of antimicrobial susceptibility test results demands that these tests be performed under optimal conditions and that laboratories have the capability to interpret results based on the most current breakpoints and interpretive categories for antimicrobial agents used in veterinary medicine.

The tables presented in CLSI VET01S represent the most current information for drug selection, interpretation, and QC using the procedures standardized in CLSI VET01.¹ Users should replace previously published tables with these new tables. Changes in the tables since the previous edition appear in black boldface type.

Clinical and Laboratory Standards Institute (CLSI). Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated From Animals. 7th ed. CLSI supplement VET01S (ISBN 978-1-68440-210-6 [Print]; ISBN 978-1-68440-211-3 [Electronic]). Clinical and Laboratory Standards Institute, USA, 2024.

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