Between mid- and late September 2026, we tested a range of substances of particular concern to public health. Several samples sold as 4-MMC contained, in addition to 4-MMC, other substances such as alpha-PVP, 4-CMC or 4-BEC. In what was believed to be an ecstasy tablet, the active ingredient was found once again alongside MDMA PMMA analysed. Caffeine was the only substance detected in two further tablets believed to be ecstasy. In one ‘speed’ sample, methamphetamine was detected alongside amphetamine. In a sample supplied as cocaine, the only substance detected was a unknown substance found. In a sample submitted for analysis as LSD, in addition to LSD, there was also MiPLA and ETH-LAD proven.

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 41 – 2026