At the end of April 2026, we tested a number of substances of particular health concern. In a fragment submitted for analysis as ecstasy, instead of the expected MDMA, a mixture of MDMA and Caffeine identified. In a sample submitted for analysis as HHC, the synthetic cannabinoid MDMB-PINACA and a unknown substance and in a hashish sample the synthetic cannabinoids ADMB-5en-HINACA and ADB-HEXINACA identified. The majority of samples submitted as 3-MMC or mephedrone (4-MMC) did not contain the expected cathinone, but another cathinone or a mixture of several cathinones, including 4-CMC, N-Ethylpentedron and 4-BEC.

Under the following link, all samples that have been analysed by checkit! since the last warnings and classified as high-dose, unexpected or of particular health concern are presented in detail: Current warnings KW 19 - 2026