I've had several batches of ecstasy pass through my hands in the past couple years. Of them all the only bunk, likely low dose meth pills I have come across were a batch of speckled green and white supermans.
Certain resources on the web may be able to help you check a pill, but the only way to be certain whether your pills contain MDxx is to get a testing kit.

RastaKaze, if you wont shut the fuck up at least get your facts straight. You'd have to be one lucky son of a bitch to get an "ecstasy" pill with cocaine in it.
Nullific Reviewed by Nullific on . Green Hammers My hook up just got some triple stack green hammers at 12 bucks a pill These are some intese ex pillz. nothing like the highs on blue dolphins or infinitys... These pillz make you thizzzzzzzzzz....... They are great...so if you get the chance to pick some up. I suggest doing it. Rating: 5