I really really really need to know, how long oxycodone will stay in your system. I have to take a blood test and I don't want the oxycodone I took to be in there. I read a bunch of stuff on the internet that people asked and most of the answers ranged from 3 days to 3 weeks, but I am not sure if that is acurate information. So if you have an answer for me, that is factual please help. It would be greatly appreciated!!