Clsi M22a3 Pdf !!top!! Jun 2026

Concise recommended actions for laboratories

, titled “Quality Control for Commercially Prepared Microbiological Culture Media; Approved Standard—Third Edition,” is a guideline published by the Clinical and Laboratory Standards Institute (CLSI). This document provides evidence-based best practices for ensuring that ready-to-use culture media perform consistently, accurately, and reliably. clsi m22a3 pdf

Following these guidelines helps you maintain high-quality results while optimizing resources. Next Step: Anaerobic media (e

("Quality Control for Commercially Prepared Microbiological Culture Media; Approved Standard—Third Edition") is the primary, authorized standard providing guidelines for the quality control (QC) of microbiological media. Anaerobic media (e.g.

I can provide the exact exemption list or QC procedures you need.

Without adherence to M22-A3, a laboratory cannot scientifically prove that its culture media performed as expected on any given test day.

Anaerobic media (e.g., Brucella blood agar) must be tested with anaerobes (e.g., Bacteroides fragilis ) and, as a negative control, an aerobe that should not grow (e.g., Pseudomonas aeruginosa ). Testing frequency—lot, shipment, or day—depends on risk assessment, but daily testing is common in high-complexity labs.