In May 2023, we tested a number of substances of particular health concern. In addition to some (very) high-dose ecstasy tablets a sample submitted as ketamine instead contained the two new psychoactive substances Deschloroketamine and 2-fluorodeschloroketamine identified. Instead of mephedrone, one sample contained the new psychoactive substance 4-CMC (Clephedrone).

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 20 - 2023