Yes it is possible to flush codeine out of your system in 2 days although trace amounts do tend to linger around and these would be picked up by any home drug test. Your best bet is to intake a great amount of water seeings how it is a water soluable drug. Unlike marijuana which stores in your fat cells opiates store in your water cells. So on top of taking in large quantities of water a great deal of excercise will def. Help. One last thing, a big deciding factor is your wieght. People with less body fat have an easyier time flushing toxins out of their system.. I am bloggin on here because I have an appointment with my probation officer 2marrow and I have been using heroin avidly for years.. Wish me luck on my you.A.