From State v. Smothers (Mo. Ct. App. Nov. 17, 2009):
Robert Smothers … was charged with one count of forgery and one count of possession of a forging instrumentality. Smothers was subject to a lawful drug test in conjunction with his bond in an unrelated matter. Upon being questioned by the police officer who administered the test, Smothers admitted to giving the police officer a false urine sample and to using a Whizzinator (a device designed to fraudulently defeat drug tests) and dehydrated urine to do so. The State charged Smothers with forgery ….
Smothers … argues that a urine sample is not a proper subject matter upon which to base a forgery charge. Subsection 4 of the forgery statute covers “any writing or other thing including receipts and universal product codes.” § 570.090.1(4) (emphasis added). We hold that, assuming the statute’s other elements are also met, the forgery statute is broad enough to cover any inauthentic item, including a false urine sample….