Because manufacturers are held to strict quality standards during production, clinical laboratories can optimize their workflows, save valuable time, and reduce costs without sacrificing patient safety. Key Updates and Revisions in the M22-A3 Edition
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The M22-A3 standard brought several critical clarifications and improvements over its predecessor (M22-A2). The updates were largely driven by surveys conducted by the College of American Pathologists (CAP), which provided the data necessary to exempt additional media types from routine user testing. Because manufacturers are held to strict quality standards
for commercial media (increased from 0.3% in previous versions). User Responsibilities User Responsibilities Make sure you have the most
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CLSI M22-A3, "Quality Control for Commercially Prepared Microbiological Culture Media," provides standards for classifying culture media into exempt and non-exempt categories based on reliability. While archived, it remains a key benchmark often used alongside IQCPs, available for purchase through technical standards retailers. Purchase the document at CLSI Shop .