European Committee on Antimicrobial Susceptibility Testing (EUCAST) obsolete: European Committe on Antimicrobial Susceptibility Testing (EUCAST) EUCAST http://www.eucast.org/ true Damion Dooley EUCAST is a standing committee jointly organized by ESCMID, ECDC and European national breakpoint committees; it deals with breakpoints and technical aspects of phenotypic in vitro antimicrobial susceptibility testing.