: This document established a list of "exempt" media. If a manufacturer could prove they followed strict quality standards, the lab didn't have to re-test those specific media types themselves. This saved countless hours and resources.

M22-A3 provides guidelines for the quality control (QC) testing of microbiological culture media. In a clinical setting, accurate diagnosis depends on the reliability of the media used to grow and identify pathogens. If a batch of agar is "dead" or non-selective, it could lead to false-negative results, directly impacting patient care.

Using the correct, authorized version of ensures that your laboratory's quality control program is scientifically sound and legally compliant.

The document, titled "Quality Control for Commercially Prepared Microbiological Culture Media," is a critical standard used by clinical laboratories to ensure the reliability of the media they use to grow and identify pathogens. What is CLSI M22-A3?