(21 November, 2019; data and data analysis added 27 November; updated 4 May 2022, 18 August 2025)

In May, 2022, the EUCAST development laboratory for fungi, noticed variable performance with several batches of VIPcheck (Mediaproducts BV) azole screening agar plates (see E.Def 10.1) for the…

For this reason, it is difficult to resolve the susceptibility interpretation of isolates in the ATU (area of technical uncertainty) in routine testing.

This warning, specifically targeting the failure of colistin gradient tests to provide the correct MIC, was initially issued July 2016 and updated 26 June, 2017 and is extended and still valid…

The following warning is removed since the problem has been solved (2024-06-05)

EUCAST disk diffusion of anaerobe bacteria (Bacteroides spp., Prevotella spp., Fusobacterium necrophorum, Clostridium perfringens and Cutibacterium acnes) is performed on Fastidious Anaerobe Agar.

- the manufacturer has issued a warning against all current batches of MH broth when used together with any freeze dried Sensititre BMD panel.

In many cases manufacturers of susceptibility testing material and devices list species for which the product is validated for use.

EUCAST has so far not defined breakpoints for C. auris, due to the lack of clinical outcome data and the high degree of clonality of this species.

EUCAST has now evaluated commercially available pre-poured MH plates.