EUCAST SOPs

SOP 1.5   
Setting breakpoints for new antimicrobial agents (9 May, 2025)

SOP 2.5 
Harmonising breakpoints for existing antimicrobial agents (12 May, 2025)

SOP 3.4 
Review and revision of breakpoints (6 May, 2025)

SOP 4.7 
EUCAST Committees and subcommittees (12 May, 2025) 

SOP 5.4 
EUCAST and the interaction with NACs (7 May, 2025) 

SOP 6.4 
Organisation and maintenance of EUCAST websites (6 May, 2025)

SOP 7.4 
Preparation and handling of EUCAST minutes (6 May, 2025)

SOP 8.4 
Format and updates of documents (6 May, 2025)

SOP 9.4 
Procedure for establishing zone diameter breakpoints and quality control criteria for new antimicrobial agents (10 July, 2025)

SOP 10.2 
MIC distributions and the setting of epidemiological cut-off (ECOFF) (10.2 from 2021, re-affirmed 12 May 2025)

SOP 11.1 
Procedure for optimizing disk contents (potencies) for disk diffusion testing of antimicrobial agents using harmonized CLSI and EUCAST criteria (21 January, 2025)

SOP 12.1 
Process for submitting disk content (potency) data for joint CLSI and EUCAST working group review and approval (11 March 2025)

SOP 13.0 
Procedure for confirming the acceptability of Mueller-Hinton agar sources for subsequent use in CLSI and/or EUCAST studies to establish disk diffusion quality control ranges (21 September, 2023, re-affirmed 13 April, 2025)

Template for registering trial data 
(22 August, 2023)

For previous versions of documents, see the document archive.