In May 2022, we tested a number of substances of particular health concern. One sample submitted for analysis as "speed" contained amphetamine as well as Ketamine. In a sample submitted as MDMA, instead of the expected one unknown substance were detected. In one sample submitted as heroin, in addition to the expected ingredients Caffeine, paracetamol and one unknown substance analysed. In a sample submitted for analysis as cannabis, the synthetic cannabinoid MDMB-4en-PINACA .

In the following, all samples that have been taken since the last warnings to date by checkit! analysed and classified as high-dose, unexpected or of particular health concern: Current warnings KW 21-2022