EUCAST distributions of MIC and Zone diameters (https:/mic.eucast.org; choose either “MIC” or “Disk diffusion”) are freely available. When sufficiently many acceptable distributions are available to the curators, ECOFFs are determined and listed beneath each graph together with confidence intervals.…
Get to know moreRationale documents Amphotericin B v 3.0 (26 June 2025) Anidulafungin vs. Candida v 5.0 (26 June 2025) Caspofungin vs Candida - there is no caspofungin RD and no specific caspofungin breakpoints. Use anidulafungin and micafungin as markers for caspofungin susceptibility where isolates "S" to both…
Get to know moreDisk diffusion of anaerobic bacteria in 16-20 hours (9 December, 2021; at 8AM , 1PM and 4PM CET to satisfy different time zones; link below). EUCAST has developed a disk diffusion method for AST of 5 anaerobic species (Bacteroides spp, Prevotella spp, Fusobacterium necrophorum, Clostridium…
Get to know moreMedia Preparation Media preparation for EUCAST disk diffusion testing and for determination of MIC values by the broth microdilution method Version 8.0, January 2026 Download PDF EUCAST antimicrobial susceptibility testing is based on MH agar and MH broth, without supplements for non-fastidious…
Get to know moreSubcommittees EUCAST subcommittees are set up to deal with specific issues or areas requiring particular expertise. Consultations and decisions on subcommittee proposals are made through the EUCAST Steering Committee and follows the structure of all other consultations and decisions. When…
Get to know moreFrom EUCAST, we wish you all happy holidays and a better 2021 than the 2020 to which we are now saying goodbye. EUCAST has, despite the pandemic, had a busy year - no travelling but many hours of online meetings and online seminars. There were new agents, new species and a new MIC and new Zone…
Get to know moreIn 2001 Professor Gunnar Kahlmeter was tasked to restructure EUCAST, and became the chair of the organization between 2002-2012, followed by a period first as clinical data co-ordinator and then as technical data co-ordinator until the end of 2025. He was also the founder of the EUCAST Development…
Get to know moreEDL MIC Testing Services The EUCAST Development Laboratory in Växjö, Sweden offers to determine minimum inhibitory concentrations (MICs) using broth microdilution according to the ISO standard 20776-1 (2019) to offer colleagues high quality MIC determination. The service is primarily organised to…
Get to know moreFor many years EUCAST and other committees have struggled with the term “intrinsic resistance”. There is no agreed definition and since breakpoints are always “exposure dependent” it is hard to agree on a definition which will survive changes in dosing, modes of administration and a sudden…
Get to know moreEUCAST Panel of S. pneumoniae and betalactam agents The panel consists of 10 strains of Streptococcus pneumoniae with reference MIC values (mg/L) representing varying levels of susceptibility to beta-lactam agents, from wild type isolates to highly resistant. However, although the selection of…
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