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

At the beginning and middle of March 2025, we tested a number of substances that pose a particular health risk. In addition to high-dose ecstasy tablets, a cocaine sample was tested instead of cocaine, Clindamycin was found. Five further cocaine samples also contained mixtures of known extenders such as Procaine, levamisole and caffeine. In addition to cannabis, three samples submitted as cannabis also contained Unknown substances was detected. In two tablets dispensed as XANAX (alprazolam) Flualprazolam was found. Two samples submitted as 3-MMC contained instead 2-MMC. In a further mephedrone sample, in addition to 4-MMC, a unknown substance 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 12 - 2025

At the end of February 2025, we tested a number of substances that pose a particular health risk. In addition to high-dose ecstasy tablets, a high dose of LSD was also detected on an LSD trip. A sample delivered as mephedrone contained cathinone instead of the expected 4-MMC 2-MMC and 3-CMC in traces. In another mephedrone sample N-Ethylpentedron was detected. In one sample submitted as CBD-P and one CBD-Edible Unknown substances found. A sample submitted as speed did not contain amphetamine, but Pregabalin.

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 10 - 2025

In mid-February 2025, we tested a number of substances of particular health concern. In all three samples submitted as 3-MMC, only the active substance 3-CMC was found. Also in two samples submitted as speed only 3-CMC detected. In two samples submitted as GHB, the active substance GBL 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 8 - 2025

In mid-January and early February 2025, we tested a number of substances of particular health concern during both stationary and mobile drug checking. In addition to a large number of high-dose ecstasy tablets, two tablets contained MDMA in addition to or instead of MDMA, Amphetamine and Caffeineanother 5-MeO-MiPT. In another MDMA sample 3-CMC and a cocaine sample was found to contain cocaine instead of Mephedrone and one unknown substance was detected. Several samples submitted as cocaine also contained combinations of the typical extenders Levamisole, procaine or Caffeine. In addition to amphetamine, two speed samples also contained MDMA or Cocaine. Another speed sample contained the following instead of amphetamine Methamphetamine, another Ketamine and another sample Cocaine. A sample submitted for analysis as ketamine contained 2-MMC. In addition to two high-dose 2C-B tablets, two others contained 2C-B several Unknown substances. Two LSD samples contained, in addition to or instead of the expected LSD, a unknown substance. In a sample passed off as cannabis MDMB-4en-PINACA was detected. Three samples submitted as mephedrone contained 4-MMC instead of the expected 4-MMC, 2-MMC. In three further 3-MMC samples 2-MMC or 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 KW 6 - 2025

In mid-December 2024 and early January 2025, we tested a number of substances of particular health concern. In addition to two high-dose ecstasy tablets, one tablet dispensed as ecstasy contained the anabolic androgenic steroid instead of MDMA Metandienoneanother 2C-B. In an MDMA sample 3-CMC detected. In addition to amphetamine, four speed samples also contained DPIAin one sample instead of amphetamine Cocaine detected, in another Methamphetamine. Two samples submitted for analysis as cocaine contained not only cocaine but also Levamisole, three Procaine. In one sample, in addition to cocaine and procaine, we also found Caffeine, in another Phenacetin and another contained a unknown substance. A cocaine sample was analysed and found to be Methamphetamine. In one sample submitted as H4-CBD and three samples submitted as THC cannabis, we were able to MDMB-4en-PINACA could be detected. Two CBD cannabis samples contained ADB-4en-PINACA and in a sample submitted as HHC, in addition to HHC two unknown substances .

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 4 - 2025

At the beginning of December 2024, we tested a number of substances of particular health concern. Four ecstasy tablets contained a high quantity of MDMA. Two samples delivered as 3-MMC (3-methylmethcathinone) turned out to be 2-MMC (2-methylmethcathinone) out. A sample submitted for analysis as cocaine contained 4-MMC (mephedrone) and a unknown substance. In addition to LSD and iso-LSD, a trip passed off as LSD also contained a previously 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 KW 50 - 2024

At the end of November 2024, we tested a number of substances of particular health concern. Over a quarter of the cocaine samples submitted during this period contained either levamisole or procaine in addition to cocaine. Cathinone 3-CMC (clophedrone) was identified in two samples submitted for analysis as 3-MMC and cathinone 2-MMC in a further sample. One sample submitted for analysis as 3-FMC contained 2-FMC and an unknown substance instead.

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 48 - 2024

At the beginning of November 2024, we tested a number of substances of particular health concern. Only the active ingredient mefenamic acid was detected in two samples delivered as cocaine. The corresponding active substance was not detected in any of the substances delivered as 3-MMC; instead, the active substances 2-MMC and 3-CMC were found. The synthetic cannabinoid ADB- 4en-PINACA was detected in one sample delivered as cannabis.

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 46 - 2024