with all honesty dude, don't even worry about it, i have been working with the government for over 5 years in federal goverment prisions (fun ya right my ass itis) and i had several urines done. till this day they have all come back negative. from my understanding, in order for them to test for riods, they got to pay extra a lot more extra (don't quote me on this but i heard its over 1,000 us dollars to do one test) just trust me they aren't going to waste their money. but if you want to be in the sfe side, just start your cycle of providing the urine sample