Clsi M22a3 Pdf -
: Ensuring no unintended microbial growth occurs during incubation.
Clinical laboratories are exempt from performing full, user-level performance testing (growth and selectivity checks) on these media, provided the manufacturer is ISO-certified and supplies a quality certificate. Examples of Exempt Media: Sheep Blood Agar (SBA) MacConkey Agar (MAC)
Document the incubation temperature, duration, and final results. Step 4: Corrective Action clsi m22a3 pdf
Defining strict quality assurance metrics that commercial producers must meet before shipping products.
: These are common, highly stable media types (like Blood Agar or MacConkey Agar) that have a proven track record of high quality from manufacturers. For these, laboratories can rely on the manufacturer's QC certificate rather than performing full in-house retesting, provided the lab verifies the storage conditions and physical integrity. : Ensuring no unintended microbial growth occurs during
Non-exempt media comprises formulations that are inherently unstable, highly selective, or prone to degradation during shipping and storage. Laboratories perform complete quality control testing on every lot number of non-exempt media received. Examples of non-exempt media include: Campylobacter Agar
Exempt media are those that have demonstrated an extremely low historical failure rate (typically less than 0.1%). Under CLSI M22-A3 guidelines, if a laboratory purchases these media from a manufacturer that certifies compliance with M22-A3 standards, the end-user laboratory (inhibition and growth testing) on every lot. Common examples of exempt media include: Sheep Blood Agar (SBA) MacConkey Agar (MAC) Step 4: Corrective Action Defining strict quality assurance
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The document is structured to guide both manufacturers and laboratory users:
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