In May 2021, we tested a number of substances of particular health concern. In one sample submitted as ketamine instead 2-Fluorodeschloroketamine was detected as an ingredient. One tablet sold as Xanax contained the ingredient alprazolam instead of alprazolam Flualprazolam. On a cannabis sample, checkit! was able to detect the synthetic cannabinoid ADB-BUTINACA prove.

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 19 - 2021