Clsi Document M45 Pdf Site

Antimicrobial breakpoints change. They are updated based on emerging resistance mechanisms and pharmacokinetic/pharmacodynamic (PK/PD) data. An old, free PDF from 2010 may list breakpoints for ciprofloxacin that are now considered dangerously high, leading to false-susceptible (very major) errors.

CLSI M45 is an indispensable companion to routine susceptibility testing. It offers a standardized safety net for challenging organisms that commercial panels ignore. While not every lab will run M45 daily, every clinical microbiology lab should have access to it – either internally or via a reference lab – and understand its principles to ensure appropriate antibiotic therapy for patients with uncommon or fastidious infections. clsi document m45 pdf