In mid-April 2026, we tested a number of substances of particular health concern. In four tablets submitted for analysis as ecstasy, instead of the expected MDMA, a mixture of Amphetamine and Caffeine identified. In a sample submitted for analysis as cannabis, the synthetic cannabinoid ADMB-5en-HINACA identified. Four further cannabis samples each contained an additional one, unknown substance. 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 2-MMC, 3-CMC, 4-CMC, N-Ethylpentedron and 4-BEC. Three samples submitted as cocaine also contained typical cocaine extenders such as Levamisole or procaine.

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 17 - 2026