To monitor new drug trends in Europe and complement the information gained through focus group discussions, C-EHRN’s 2023 Civil Society-led Monitoring of Harm Reduction in Europe includes two reports via the Trans European Drug Information Network (TEDI), drawing from data collected from drug checking services.

This multi-year report contains data since 2018 and aims to show the changes in drug markets over time. Most drugs have fairly stable presentations over this time period, however there are some visible trends. Cocaine purity has slightly increased, but the reduction in samples with adulteration has changed quite significantly in the last 2 years, from approximately 40% to under 25%. MDMA purity has slightly increased, but the number of samples substituted for another substance has increased from under 10% to approximately 20%. Drug checking remains inhomogenous throughout Europe, with just over half of all samples coming from two drug-checking services, in Spain and in the UK. The smallest contributors need more funding and resources if they are to play a role in market monitoring as well as harm reduction.