Tadeusz sliwa voted up Chris Tackett's answer 1/6/2016 How Long Does Oxycodone Stay In Your Urine For? Depends on how often you use. I'm using up to and in excess of 200mg of oxycontin daily. I've peed clean after 1 week of going cold turkey, after using daily before. If you just took the one pill you should be good in about 2 - 3 days.