Certain media, particularly those for fastidious organisms or those with higher historical failure rates, remain "non-exempt" and require full QC testing by the user before being released for patient testing. Key Responsibilities
The primary source for the M22 document and its updates. clsi m22a3 pdf link
The document clearly delineates the roles of different parties in the supply chain: checking for cracked plates
). Labs do not need to perform full in-house quality control (QC) on these media if the manufacturer provides documentation of compliance. clsi m22a3 pdf link
Must document the receipt and physical condition of every shipment (e.g., checking for cracked plates, hemolysis, or contamination) and perform required QC for non-exempt media. Accessing the PDF
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