Clsi M22a3 Pdf |top| Jun 2026

standard can significantly reduce your lab's workload? This approved standard lists specific "exempt" media that do not require routine quality control retesting by the user if they are of proven acceptability from the manufacturer. American Society for Microbiology Key Insight: M22-A3 added 27 additional media to the exempt list compared to previous versions. Why it matters:

Step-by-step protocols for:

Labs that regularly need multiple CLSI standards can purchase an annual subscription. This gives access to the entire CLSI database, including M22-A3, as readable PDFs (non-downloadable but printable for lab use). clsi m22a3 pdf

Exempt vs. Non-Exempt Media: The Breakthrough Classification standard can significantly reduce your lab's workload

Exempt media consists of highly stable formulations with a proven track record of minimal failure rates. Laboratories do not need to perform full user QC (such as inoculation with control organisms) on these media if they receive documentation from the manufacturer proving the lot passed QC. Examples of commonly exempt media include: Sheep Blood Agar (SBA) MacConkey Agar (MAC) Why it matters: Step-by-step protocols for: Labs that