Clsi M22a3 Pdf May 2026

Includes new recommendations for QC of media used to recover difficult-to-grow pathogens. Laboratory Inspection Requirements

The standard, titled "Quality Control for Commercially Prepared Microbiological Culture Media; Approved Standard—Third Edition," provides a framework for both manufacturers and laboratory users to ensure the reliability of ready-to-use culture media. Published in 2004, it serves as a consensus-based guide for maintaining quality assurance in clinical microbiology. Key Purpose and Scope clsi m22a3 pdf

Excessive moisture, dehydration, or frozen/melted agar. Contamination: Any visible growth or excessive bubbles. Purchasing and Access Includes new recommendations for QC of media used

While certain media are exempt from full retesting, labs must still perform a for physical defects upon receipt of every shipment. The standard requires monitoring for: Approved Standard—Third Edition