I live in a sober house and they monitor my drug urine levels. My first test came back in the 6000 ng. I have been taking 10mg XR a day for 2 weeks & just the other day I started taking 20mg XR on Friday & had a urine drug screen on Monday & now another one today. Will my levels go much higher. I am taking as perscribed but wondering if it will affect my drug screen. Do they eventually even out the levels & how long does it take?