What about synthetic urine? Is this only good for immediate results drug tests such as narcotics or will this work for steroid tests performed in labs? I am currently tested by a lab in Florida by my employer. I am very uneducatedo n this subject but I do know per their website that they use a GC/MS test of some sort. If using klean urine, will they be able to tell by the test that it wasn't a legitimate sample?