At the beginning of December 2024, we tested a number of substances of particular health concern. Four ecstasy tablets contained a high quantity of MDMA. Two samples delivered as 3-MMC (3-methylmethcathinone) turned out to be 2-MMC (2-methylmethcathinone) out. A sample submitted for analysis as cocaine contained 4-MMC (mephedrone) and a unknown substance. In addition to LSD and iso-LSD, a trip passed off as LSD also contained a previously unknown substance .

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 50 - 2024