What are common methods used to substitute “clean” urine for “dirty” urine?
Substitution of “clean” urine for ones own is difficult when the urine collection is observed, however, some creative donors go to great lengths to cover-up their drug use. Lifelike male prosthetics that dispense smuggled urine can be purchased and females can insert tubes containing clean urine sealed with cellophane into their body cavity that can be pierced to release the “clean” urine. Some donors have even introduced another person’s urine into their own bladder by injection or catheterization. More commonly, when the collection is not observed, donors smuggle a hidden container of clean urine into the collection room. Checking the urine temperature immediately after collection indicates substitution when the counterfeit sample has not been brought to body temperature. Compounding the matter, guaranteed drug free urine can be readily purchased on the Internet.
