Quick Fix Synthetic Urine is the clean, pre-mixed laboratory urine that everyone is talking about! Instead of generating the urine in a human body, Spectrum Labs has perfected a means of creating urine in a laboratory environment. This laboratory process results in a cleaner, fresher fake urine that is toxin free and balanced for pH, specific gravity, creatinine, urea, and several other urine characteristics. Quick Fix is also designed to be unisex therefore it can be used by either a man or woman. That's why it's considered the best synthetic urine when it comes to fake pee.