At the end of June 2025, we tested a number of substances of particular health concern during mobile drug checking. Almost all ecstasy tablets handed in for analysis contained a (very) high dose of MDMA. A tablet dispensed as LSD contained a unknown substance. Three samples submitted as mephedrone did not contain mephedrone, but 2-MMC or ketamine. In addition, a pink powder dispensed as Tucibi contained a Mixture of ketamine, MDMA and 3-CMC 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 week 27 - 2025

In mid-June 2025, we tested a number of substances that pose a particular health risk. In a tablet sold as ecstasy, the active ingredients Methamphetamine, 5-MAPB and 5-MeO-MIPT were detected. Other tablets labelled as ecstasy were found to contain extremely high levels of active substances. One sample declared as speed contained only DMT and N-methyltryptamine. In two cannabis products, the synthetic cannabinoids MDMB-4en-PINACA and ADB-BUTINACA found.

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 KW 26 - 2025

At the end of May / beginning of June 2025, we tested a number of substances of particular health concern. One tablet submitted for analysis as ecstasy contained a mixture of MDMA, amphetamine, caffeine, ketamine and ParacetamolSome other ecstasy tablets contained a (very) high dose of MDMA. Two samples submitted as ketamine contained Cocaine with extenders (levamisole and procaine respectively) and another ketamine sample contained 2-MMC and Procaine. In two MDMA samples Mephedrone was detected - once in addition to MDMA and once exclusively. In one CBD sample HHC (hexahydrocannabinol) .

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 24 - 2025

In mid and late May 2025, we tested a number of substances of particular health concern. Some ecstasy tablets contained a (very) high dose of MDMA. Instead of MDMA, an ecstasy tablet contained a mixture of AMT and caffeine. In two samples submitted for analysis as MDMA, instead 2-MMC was found. A sample submitted as low-THC edible instead contained MDMB-4en-PINACA. A CBD cannabis sample also contained a unknown substance. In two other THC cannabis samples, in addition to or instead of this, also Unknown substances detected. A third THC cannabis sample contained not only cannabis but also MDMB-BUTINACA. Several cocaine samples also contained typical extenders such as Levamisole, procaine, phenacetin and/or caffeine. A sample submitted as mephedrone showed N-Ethylpentedron and a 3-MMC sample instead contained 3-CMC.

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 KW 22 - 2025

At the beginning of May 2025, we tested a number of substances of particular health concern. Some ecstasy tablets contained a (very) high dose of MDMA. A tablet submitted for analysis as 2C-B also contained a high dose of MDMA. In addition to cocaine, procaine was also detected in some cocaine samples. One sample submitted as methamphetamine showed N-Ethylpentedron and a 3-MMC sample instead contained 3-CMC. One sample submitted for analysis as cannabis also contained MDMB-4en-PINACA 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 KW 20 - 2025

In mid / late April 2025, we tested a number of substances that pose a particular health risk. In addition to some high-dose ecstasy tablets, two tablets contained MDMA and Amphetamine respectively Caffeine detected. A mephedrone sample contained cathinone in addition to mephedrone 3-CMC (3-chloromethcathinone), another mephedrone sample contained only 3-CMC.

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 18 - 2025

At the beginning of April 2025, we tested a number of substances of particular health concern. In a tablet sold as ecstasy, in addition to MDMA also Caffeine was found. One sample submitted as mephedrone contained only the active substance 4-CMC. An ecstasy tablet with an extremely high dose was also tested.

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 KW 16 - 2025

At the end of March 2025, we tested a number of substances of particular health concern. In addition to high-dose ecstasy tablets, several cocaine samples also contained mixtures of known extenders such as Procaine, levamisole and caffeine. A sample submitted for analysis as MDMA instead contained 2-MMC. One sample submitted as 4-MMC and one as 3-MMC both contained instead 2-MMC, Another sample contained instead of 3-MMC Dimethylpentylone. In a 3-CMC sample, an additional Ketamine was found. In a sample submitted as Ritalin, a unknown substance was detected. One sample, which was delivered as N-ethylhexedrone, contained 4-Methylpentedrone.

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 KW 14 - 2025