In the complex world of clinical microbiology, most labs are well-versed in the "big three" documents from the Clinical and Laboratory Standards Institute (CLSI) : M02, M07, and the ubiquitous M100. But what happens when you encounter an organism that isn't a "usual suspect"? That’s where comes in.
(current edition) for official breakpoints, QC tables, and procedural details. This article is for educational use and does not replace the copyrighted standard.
| Edition | Year | Key Changes | |---------|------|--------------| | M45-A | 2005 | First edition; introduced methods for 22 organism groups. | | M45-A2 | 2010 | Added breakpoints for Burkholderia cepacia , Stenotrophomonas maltophilia . | | M45-A3 | 2015 | Expanded to include Aeromonas , Vibrio , and Plesiomonas . Updated QC strains. | | | 2020+ | Current edition. Includes new breakpoints for Campylobacter , revised Haemophilus testing, and quality control updates. | clsi document m45 pdf
The CLSI M45 document is an indispensable asset for the modern clinical microbiology laboratory. By providing clear, standardized directions for testing infrequently isolated and fastidious bacteria, it ensures that even the rarest patient infections are treated with targeted, accurate, and effective antimicrobial therapy.
Crucial warnings regarding intrinsic resistances (e.g., Leuconostoc resistance to vancomycin) or specific drug-organism combinations to avoid. How to Implement CLSI M45 in the Clinical Laboratory In the complex world of clinical microbiology, most
When executing testing according to CLSI M45, laboratory professionals must pay strict attention to three core variables: Inoculum Preparation
Guidance for testing bacteria potentially associated with bioterrorism is also included. Current Edition and Correction Notices (current edition) for official breakpoints, QC tables, and
Some key points from the CLSI M45 document include: