It really depends on how long it is in your system because of all the differnt drugs found in ecacstasy, but i would think it couldnt be much more than a week. there are sites on the web that will tell you what is in your ecstasy .
check out www.erowid.org and check out their MDMA vault, it should be able to answer all your questions. And what do you mean by contact? If you mean handeling a pill, than no, there is no way that that would get into your bloodstream and foul up a drug test.
estacy 
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