No. DOT is easy to pass if you are doing synthetic. DOT for one regulated industry is no different than another (FAA to USCG for example). Both use the split specimen and both are tested using the five panel screening. In addition to that, one (or more) validity test is performed (such as specific gravity or creatine). Sub products, such as Quick Fix, account for all those tests and make sure they are not distinguishable than actual urine.

Only if you failed the screening, which you won't since sub products contain NO drug metabolites to begin with, would it go under the more sensitive GC/MS test to get exact amounts of the single metabolite it tests for. TCH-COOH.

My point is, DOT is easy to pass if you are doing it with the sub route. Just make sure you practice the temp being 90-100 degrees. I'd also recommend the larger product, because since it is a split sample, 2 oz might not be enough.