Key content and structure
: Procedures for when a medium fails to perform as expected, regardless of its exempt status. Conclusion
The Clinical and Laboratory Standards Institute (CLSI) publishes the definitive guidance for this process: , titled "Quality Control for Commercially Prepared Microbiological Culture Media." What is CLSI M22-A3?
Maintaining a certified quality management system (such as ISO 13485). clsi m22a3 pdf link
The complete standard package contains several critical sections. The document is 44 pages in length and contains comprehensive guidance on quality control for clinically significant microorganisms. While the full standard is protected by copyright, a free "front matter" (preliminary pages) sample is publicly available for educational purposes.
The document clarifies the distinct roles of the manufacturer, distributor, and end-user in the quality chain. Where to Find the CLSI M22-A3 PDF
The standard is built on three surveys conducted by the CAP. The third survey, performed in the fall of 2001, was conducted in response to numerous requests for further expansion of the exempt media list, resulting in the addition of . Key content and structure : Procedures for when
CLSI M22-A3 is the Clinical and Laboratory Standards Institute guideline titled "Methods for Antimicrobial Disk Susceptibility Testing of Bacteria Isolated from Animals" (3rd edition). It provides standardized procedures, interpretive criteria, quality control recommendations, and reporting guidance for disk diffusion antimicrobial susceptibility testing in veterinary microbiology.
: Limiting the number of passages from the original stock to ensure the organism's characteristics remain stable. 4. Documentation and Compliance
The CLSI M22-A3 standard, "Quality Control for Commercially Prepared Microbiological Culture Media," provides essential guidelines for ensuring the reliability of ready-to-use culture media, with a focus on exempting, from retesting, media with proven low failure rates. This third edition document details quality assurance roles for manufacturers and laboratories, including protocols for maintaining test strains. The official document can be purchased from the Clinical and Laboratory Standards Institute , with preview options available at the ANSI Webstore . The document clarifies the distinct roles of the
Ensuring no contamination occurs during production.
It outlines what users should expect from commercial manufacturers regarding quality assurance before products ever reach the laboratory. Why It Still Matters Today