There is 3 home chemical tests you can run to narrow down the likelihood that it is MDMA. There are also labs that can verify via mass spectrometer, free in eur

There is 3 home chemical tests you can run to narrow down the likelihood that it is MDMA. There are also labs that can verify via mass spectrometer, free in europe, paid in usa. https://dancesafe.org/product/mdma-testing-kit/ https://dancesafe.org/product/mdma-testing-kit/ Purity tests are pretty subjective. People have also been testing their drugs for the presence of fentenayl but it's somewhat unlikely due to the drug profile and can throw false positives given the sensitivity of the test sample setup.