网页2022年10月19日 · Yes, Magnum Synthetic Urine has uric acid, which is contained in one of the included vials. When you mix Magnum Detox fake urine with the included uric acid vial, make sure to use it within 7 days, or else, it will go bad and will most likely fail your drug test. Uric acid is an important component of actual human pee.