In May 2020, we tested a number of substances of particular health concern. One tablet dispensed as ecstasy was found to contain 366 mg MDMA, a very high level of the expected active ingredient. Three tablets that were dispensed as unknown substances each contained a unidentifiable ingredient. Two samples submitted as mephedrone did not contain the expected active substance, but the new psychoactive substance 4-CMC (Clephedrone); one mephedrone sample contained 3-MMC; two further mephedrone samples showed not only mephedrone but also two unknown substances resp. an unknown substance and 4-MEC .

Under the following link, all samples that have been collected since the last warnings until today at checkit! were analysed and contained new psychoactive substances and/or were classified as high doses, unexpected or of particular health concern: Current warnings May 2020