When I was on probation, a few occasions they would stand right there next to me and watch me piss ... they do that sometimes so if I was you, just get some quick tabs. They are an herbal pill found at most smoke shops, take them (10 total), drink the ammount of water it says and piss about 2 times before the test and you SHOULD be ok. I have been using urineluck quick fix (synthetic urine) for the past 3 years so Im not sure on what success rate quick tabs have these days but they always worked for me when I was on probation