CLSI Standards: Guidelines for Health Care Excellence

Developed by our members for use by the global laboratory community, CLSI’s consensus-based medical laboratory standards are the most widely recognized resources for continually improving testing quality, safety, and efficiency.

Browse our collection of consensus-based medical laboratory standards documents. Choose from print or electronic versions of CLSI standards and guidelines.

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MM18 | Interpretive Criteria for Identification of Bacteria and Fungi by Targeted DNA Sequencing, 2nd Edition

This guideline includes information on sequencing DNA targets of cultured isolates, provides a quantitative metric for perceiving microbial diversity, and can serve as the basis to identify microorganisms. By establishing interpretive criteria for microorganism identification by targeted DNA sequencing, this guideline provides structure to laboratories that identify microorganisms for medical use.

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VET01 | Performance Standards for Antimicrobial Disk and Dilution Susceptibility Tests for Bacteria Isolated From Animals, 5th Edition

This standard covers the current recommended methods for disk diffusion susceptibility testing and the reference methods for determining minimal inhibitory concentrations of aerobic bacteria by broth macrodilution, broth microdilution, and agar dilution for veterinary use.

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