In early June 2026, we tested a number of substances of particular concern to public health. In two samples submitted for analysis as mephedrone (4-MMC), the following were also found: 4-BEC or 4-MEC was detected. Furthermore, in several samples sold as 3-MMC 4-CMC and/or N-ethylpentedrone (NEP) found. One sample each, labelled as LSD and MDMA, contained instead a unknown substance. Alongside a few very high doses of MDMA In addition to the expected MDMA, several ecstasy tablets were also found to contain traces of Caffeine or instead Amphetamine, 3-CMC or a unknown substance determined.

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 for calendar week 25 – 2026