Energy Control – a Spanish project that was a winner of the 2010 European Drug Prevention Prize, has been involved in a one-year pilot research project to provide a testing service to cryptomarket drug users. 219 samples of drugs purchased on the ‘dark web’ were analysed.
User surveys indicate that expectations of higher drug purity are a key reason for cryptomarket use. In 2014–2015, Spain’s NGO Energy Control conducted a 1-year pilotproject to provide a testing service to cryptomarket drug users using the Transnational European Drug Information (TEDI) guidelines. In this paper, we present content and purity data from the trial.