In early/mid-July 2026, we tested a range of substances of particular concern to public health. In a sample submitted for analysis as MDMA, the following were found alongside MDMA: 2-MMC detected; in another MDMA sample, a mixture of Ketamine and 2-MMC. The majority of samples submitted for analysis as 2-MMC, 3-MMC or 4-MMC (mephedrone) did not contain the expected cathinone, but rather one or more other cathinones, including N-Ethylpentedron and 4-CMC.

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 for calendar week 29 – 2026