What This Document Is
This document details the standardized operating procedure (SOP) for Extended Spectrum Beta Lactamase (ESBL) testing within a clinical microbiology laboratory setting. It outlines the principles behind ESBL detection, the significance of identifying these resistant bacteria, and the methods used for confirmation. The procedure focuses on *Escherichia coli*, *Klebsiella pneumoniae*, *Klebsiella oxytoca*, and *Proteus mirabilis* isolates.
Why This Document Matters
This SOP is critical for microbiology technologists, laboratory scientists, and students in MLS programs who are involved in bacterial identification and antibiotic susceptibility testing. Accurate ESBL detection is essential for appropriate patient treatment, as these bacteria exhibit resistance to many common antibiotics. Misidentification can lead to treatment failures and increased healthcare costs. This document ensures consistent and reliable ESBL testing practices within the laboratory.
Common Limitations or Challenges
This SOP provides a framework for ESBL testing but does not cover all possible scenarios. Equivocal results, particularly with the MicroScan system, require further investigation and interpretation. The document also assumes a baseline understanding of microbiology principles and laboratory techniques. It does not replace the need for ongoing training and competency assessment.
What This Document Provides
The full document includes:
* A detailed explanation of the principle of ESBL testing and its clinical relevance.
* Specific protocols for ESBL detection using the MicroScan system, including MIC interpretation criteria.
* A disc diffusion confirmation procedure with specific disc types and quality control measures.
* Guidance on manual review of MicroScan panels to avoid false-positive results.
* Clear identification of the bacterial species covered by the protocol.
This preview does *not* include the complete step-by-step instructions for the disc diffusion method, detailed MicroScan panel interpretation examples, or specific quality control parameters.
