There is currently a worldwide epidemic of PMMA (paramethoxymethamphetamine) and PMA (paramethoxyamphetamine) laced MDMA and pills. It's been showing up all over the world in large quantities. Whether this is caused by impure precursors or intentional adulteration by manufacturers is unknown, and ultimately unimportant. The fact is that it's out there and based on the amount of it and the wide distribution I am assuming this is not from a single source. PMMA and PMA are very potent neurotoxins that can be fatal from a single dose. These substances do not react with or alter the results of a common Marquis reagent test. You need a Mandelin reagent to test for PMA/PMMA. They will give a reddish brown result. MDxx will give a dark bluish black/purplish black result as with Marquis reagent. Please, please use test kits on any pills or molly. The cost of a test kit is insignificant compared to the value of your life. If you have a group you often roll with consider splitting the cost of the test kit to make it even cheaper. There is no reason anyone should die because they wanted to roll. TEST KITS SAVE LIVES!!!