At the end of March 2025, we tested a number of substances of particular health concern. In addition to high-dose ecstasy tablets, several cocaine samples also contained mixtures of known extenders such as Procaine, levamisole and caffeine. A sample submitted for analysis as MDMA instead contained 2-MMC. One sample submitted as 4-MMC and one as 3-MMC both contained instead 2-MMC, Another sample contained instead of 3-MMC Dimethylpentylone. In a 3-CMC sample, an additional Ketamine was found. In a sample submitted as Ritalin, a unknown substance was detected. One sample, which was delivered as N-ethylhexedrone, contained 4-Methylpentedrone.

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 14 - 2025