I am a 26 year old mother. My sister is a general manager for a great company. She put a word in for me to get a manager's position at her store. My problem is the drug test. I will have adderall in my system. I have a prescription for it, so I am not worried about that aspect but I have never told my family that I was diagnosed years ago. If I take 15mg daily, how long will it take before it is out of my system completely?