To qualify for the exemptions allowed under M22-A3, the commercial manufacturer must adhere to strict guidelines:
The third edition incorporates data from three CAP surveys, with the survey conducted in the fall of 2001 leading to the addition of 27 new “exempt media.”
The most significant feature of the CLSI M22-A3 document is the expanded list of "exempt" media
When searching for the , it is critical to consult the official CLSI website or authorized medical libraries to ensure your laboratory compiles with the most up-to-date addendums and newer editions (such as M22 Ed4), which align more closely with contemporary regulatory inspection checklists. clsi m22a3 pdf
If you have been searching for the , you are likely looking for the official guidelines to validate your Liquid Chromatography (LC) systems. This article provides a deep dive into what M22-A3 is, why it matters, how to interpret its core requirements, and how to ensure you are using the correct version of this critical document.
The third CAP survey, conducted in the fall of 2001, evaluated , comprising 32,702,833 plates, tubes, or bottles —a truly massive dataset that gave the standard its statistical backbone. The findings and key changes in M22-A3 include:
Maintain rigorous quality systems (often aligned with ISO 13485). To qualify for the exemptions allowed under M22-A3,
One of the most significant contributions of the M22-A3 standard is the categorization of commercially prepared microbiological culture media into two primary groups: and Nonexempt Media . This classification was derived from data collected from three surveys conducted by the College of American Pathologists (CAP).
In the highly regulated world of clinical diagnostics and pharmaceutical analysis, precision is not just a goal—it is a legal and ethical requirement. For laboratories performing chromatographic assays, particularly those dealing with therapeutic drug monitoring (TDM), toxicology, and clinical chemistry, the document known as serves as the definitive roadmap.
Creating your own lab forms based on these templates ensures audit readiness. The third CAP survey, conducted in the fall
To get the legitimate , you have three options:
Keep the manufacturer’s QC certificates on file for inspection.
The document contains several important tables that are of great practical value:
