if you do fail it will probably be because of a diluted. Detox aren't some magic formula. they work by dilution and most drug screeings have validity testing also. Most of the time, yeh not all the time, if a sample comes back diluted the employer will allow you to retake the test. Quickfix and other synthetic urine can be found online and shipped to your home overnight. and im willing to bet you know someone who has clean urine, like try mom or dad if it comes down to it