In November 2021, we tested a number of substances of particular health concern. One as 2C-B tablet showed besides 2C-B two unknown substances on. In several Ecstasy-pills, instead of MDMA, a unknown substance .

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 week 49-2021