how long oxys r in ur system

It takes about 36 hours for system to clear fro oxycontin. If you take extended release fore it would take a little longer, about 45 hours. This medication is excreted primarily by kidneys, so within 30-40 hours, which depends on administered form of drug, this substance will be completely eliminated by urine from the system. In persons that have renal impairment, this time is not significantly increased. But at the other side, it is increased in persons with hepatic impairment. Hope that helped.