EUCAST News

07 Jul 2016

Warning against the use of colistin gradient tests!

The EUCAST Development Laboratory together with EUCAST Network Laboratories have evaluated the colistin gradient tests currently available from bioMérieux and Liofilchem. MIC-values are often too low and this causes false susceptibility (VME). Manufacturers have been informed and are aiming to solve the problem. Current gradient tests should be withdrawn from use!