At the end of August 2025, we tested a number of substances of particular health concern. Several ecstasy tablets contained a (very) high dose of MDMA. One sample submitted for analysis as MDMA turned out to be Ketamine. In addition to cocaine, several cocaine samples also contained typical extenders such as Levamisole, procaine, phenacetin or Caffeine. In a ketamine sample we were able to Deschloro-N-ethylketamine detect. In two samples delivered as mephedrone (4-MMC), instead 3-CMC, in another 4-CMC found. Two samples handed in as CBD cannabis and one as THC cannabis contained new synthetic cannabinoids such as MDMB-INACA, MDMB-PINACA, MDMB-4en-PINACA or MDMB-BUTINACA. In a 3-MMC sample, mephedrone (4-MMC) and 3-CMC detected. One sample submitted as methamphetamine proved to be unknown substance.

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 week 36 - 2025