At the end of September / beginning of October 2025, we tested a number of substances of particular health concern. One sample submitted for analysis as MDMA instead contained Mephedrone (4-MMC) detected. In addition to mephedrone, one sample submitted as mephedrone also contained 4-Bromoethcathinone (4-BEC). In a tablet dispensed as XANAX (alprazolam) only Paracetamol .

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 42 - 2025