: Media that are highly complex, have a higher failure rate, or are prepared in-house. These require full QC testing by the laboratory using specific control organisms to verify growth, selectivity, and biochemical reactions. 3. Maintenance of Control Organisms
: Maintaining strains in a way that prevents genetic drift or loss of viability. clsi m22a3 pdf link
Based on data from the , CLSI M22-A3 identified that certain commercially produced media have a very low, acceptable failure rate (less than or equal to 0.5%). Responsibilities for Exempt Media : Media that are highly complex, have a
It is crucial to understand that . While the quality of AST media is paramount, the specific quality control recommendations for media used in AST (e.g., Mueller-Hinton agar) are detailed in separate, dedicated CLSI documents, such as M02 and M07. Maintenance of Control Organisms : Maintaining strains in
CLSI M22-A3 is an approved standard that provides quality assurance procedures for both manufacturers and of prepared, ready-to-use microbiological culture media. Published in June 2004 , it represents the third edition of the M22 standard, replacing the previous version, M22-A2, which was published in December 1996.
Are you trying to establish an for your lab?
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