Ok i doubt this but taken from this page on "how to pass a drug test" (thanks *CMB*!), i found this stat:
Simply borrowing a pencil from a classmate that uses drugs will pass enough residue to render a positive test and an angry parent. When we have statistics like - 90% of all paper currency shows traces of cocaine, this test kit is quite foolish. Your only defense is to continually clean everything you touch with disinfectants.
90 percent?? Thats pretty HIGH. Anyone think they can back this up? Or is it made up? Still, if its true then, thats awesome!
http://www.neonjoint.com/c7.html
