Clsi M22a3 Pdf -

Maintain viable stock cultures of required ATCC strains (e.g., Staphylococcus aureus , Escherichia coli , Pseudomonas aeruginosa ) for testing non-exempt batches.

Establishes a uniform language and expectation of quality across global manufacturers and clinical sites.

Verify that the manufacturer’s QC certificate matches the received lot number and expiration date.

Understanding CLSI M22-A3: The Standard for Quality Control of Microbiological Culture Media clsi m22a3 pdf

: Details on shelf-life and transport conditions.

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This section covers the technical details of inoculating QC media, including direct inoculation, standardized suspension, and preparation of suspension. Maintain viable stock cultures of required ATCC strains (e

Chocolate Agar (except when used for fastidious organisms like Neisseria or Haemophilus ) Eosin Methylene Blue (EMB) Agar 2. Non-Exempt Media (Requiring Full User QC)

: Requirements for physical inspection and remedial actions for deficiencies.

If a batch of media fails visual inspection or organism testing, it must be quarantined. Do not report patient results using failed media. Contact the manufacturer immediately to report the lot failure and arrange for a replacement. Regulatory and Accreditation Compliance Understanding CLSI M22-A3: The Standard for Quality Control

Adherence to CLSI M22-A3 is critical for laboratories seeking accreditation from major regulatory bodies such as the Clinical Laboratory Improvement Amendments (CLIA), the College of American Pathologists (CAP), and The Joint Commission.

M22-A3 does not exist in a vacuum. It is part of a broader ecosystem of CLSI standards. The document references several related NCCLS (now CLSI) publications, including: