The CLSI M22-A3 document, titled Quality Control for Commercially Prepared Microbiological Culture Media, is a critical standard used by microbiology laboratories to ensure the reliability of their culture media while optimizing operational efficiency. Published by the Clinical and Laboratory Standards Institute (CLSI), this third edition established the widely used "exempt" media list based on extensive performance data. Understanding the CLSI M22-A3 Standard

  1. CLSI Website: You can purchase the PDF directly from the CLSI website (www.clsi.org). Create an account, search for the document ID "M22-A3", and follow the checkout process.
  2. Public Libraries and Online Repositories: Some public libraries and online repositories, like the National Library of Medicine's PubMed Central or the World Health Organization's (WHO) document repository, might have the document available for free or with a subscription.
  3. Document Sharing Platforms: You can also try searching on document sharing platforms like ResearchGate, Academia.edu, or Google Scholar.

Manufacturers: Use the standard to establish rigorous QC protocols for every lot.

(or proven reliability) are considered "exempt" from routine user retesting, provided the manufacturer provides a quality certificate.

User Interface Mockup (Description)

Screen: Patient Sample #459 - Identification Panel

Key references (for lab use)

Is there an updated version of CLSI M22-A3?

Clsi M22a3 Pdf !link! -

The CLSI M22-A3 document, titled Quality Control for Commercially Prepared Microbiological Culture Media, is a critical standard used by microbiology laboratories to ensure the reliability of their culture media while optimizing operational efficiency. Published by the Clinical and Laboratory Standards Institute (CLSI), this third edition established the widely used "exempt" media list based on extensive performance data. Understanding the CLSI M22-A3 Standard

  1. CLSI Website: You can purchase the PDF directly from the CLSI website (www.clsi.org). Create an account, search for the document ID "M22-A3", and follow the checkout process.
  2. Public Libraries and Online Repositories: Some public libraries and online repositories, like the National Library of Medicine's PubMed Central or the World Health Organization's (WHO) document repository, might have the document available for free or with a subscription.
  3. Document Sharing Platforms: You can also try searching on document sharing platforms like ResearchGate, Academia.edu, or Google Scholar.

Manufacturers: Use the standard to establish rigorous QC protocols for every lot.

(or proven reliability) are considered "exempt" from routine user retesting, provided the manufacturer provides a quality certificate.

User Interface Mockup (Description)

Screen: Patient Sample #459 - Identification Panel

Key references (for lab use)

Is there an updated version of CLSI M22-A3?