Didn't realize this would be a DOT test, meaning you are good one way or the other on uric acid. Still good to have it though.

I can't say a whole lot about the physical part though unfortunately, just going to have to play it by ear and see the circumstances and your options when you get there. I would plan on being able to sneak in the synthetic but also you be going in completely diluted naturally. Not in the hopes of passing, but of getting a 'negative dilute' which should allow you to retest. Obviously this is last resort worst case scenario if for some reason you aren't able to use your synthetic.