Just as a quick follow up on this - theres a new kit on the market that can be used for testing for certain piperazines! If you just follow the link on the top of the page on Pillreports for details.
If your after a quick and easy one step kit then buy a marquis - you can test for speed, dxm, 2cx and MDxx.
If however you want to test for further substances like PMA, Ketamine etc then you need to buy further kits.
They are very easy to use, put a tiny scraping of your pill on a non pourous surface (say a plate - or an upturned soda can if your out and about), add one drop of solution and match the colour to the chart supplied.
MDxx will turn the marquis a purple to almost jet black.
If you want further information check out the pillreport test section or PM me and Ill will be happy to help.