Expert Rules EUCAST expert rules (listed below) are a tabulated collection of expert knowledge on interpretive rules. These rules should be applied to antimicrobial susceptibility testing to rationalise testing, reduce errors, and make appropriate recommendations for reporting particular…
Get to know moreThe guidance document on "Intravenous use of fosfomycin" updated. See guidance documents .
Get to know moreA revised version of the EUCAST guidance document on “When there are no breakpoints” has been published. The latest reformatted version contains further advice to help laboratories interpret susceptibility testing when there are no breakpoints for either uncommon bacterial species or agents.…
Get to know moreGuidance Documents All Antibiotic Infection Methodology Pathogen Regulatory Document Title Date of Publication Previous Versions and Notes When there are no breakpoints 10 July 2026 September 2024 29 February 2024 30 June 2023 December 2021 - 30 June 2023 July 2016 - December 2021 Guidance on the…
Get to know moreGuidance Documents Guidance on how to qualify in-house performance of commercial tests for antifungal susceptibility testing before adoption of EUCAST breakpoints 16 April 2026 Download PDF Guidance on Interpretation of MICs for rare yeast without breakpoints in breakpoint tables 19 June 2024…
Get to know moreThe EUCAST guidance on what to do when there are no breakpoints in the breakpoint table (species lacking, agent lacking, IE, dash etc) has been thoroughly revised in February 2024. Go to the EUCAST webpage for this and other Guidance documents .
Get to know moreMIC Determination of non-fastidious and fastidious organisms The EUCAST recommendations for MIC determination for non-fastidious organisms are in complete agreement with the recommendations from the International Standards Organisation ( ISO ). For fastidious organisms (streptococci including S.…
Get to know moreClinical Breakpoint Tables Breakpoints are part of a system for categorizing microorganisms as: Susceptible (S) Susceptible, increased exposure (I) Resistant (R) To antimicrobial agents approved for use in the treatment of infectious diseases. Information of the structure of the tables and how they…
Get to know moreTigecycline rationale and guidance documents were revised.
Get to know moreBacteria Most of EUCAST’s work is dedicated to defining breakpoints for bacteria that cause infections in humans. How to Use This Section: This page gives you access to information and services related to pathogenic bacteria. Important: All resources here are complementary. Please review them…
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