I drank one beer at 8PM with dinner and thereafter started flushing my system with water after I knew I messed up. I got up and went to the gym for 2 hours. Drank liter after liter of water and green tea. I took vitamin B and C and creatine (sp) to hopefully combat the diluted urine. I pissed at 4:00 PM the following day mid stream urine. I did all I could - do you think this will come back positive or negative? Concerned and sweating it. Last time I do this to myself.