At the beginning of September 2025, we tested a number of substances of particular health concern. Several ecstasy tablets contained a (very) high dose of MDMA. One sample submitted for analysis as MDMA also contained, in addition to MDMA Amphetamine. A cocaine sample instead contained a unknown substance. In addition to ketamine, a ketamine sample also contained Caffeine, 2-MMC and N-Ethylpentedron were found. One sample submitted as mephedrone (4-MMC) and one sample submitted as methamphetamine contained a unknown substance. In addition, one sample submitted as DMT also contained NBoc-DMT and one unknown substance found.

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 week 38 - 2025