People v. Pearson

Defendant was convicted, under section 17-57(a)2) of Criminal Code, of defrauding a drug or alcohol screening test (required by terms of his probation) by substituting a sample with the intent of defeating that test. Conviction for that offense does not require proof that the substance submitted during a screening test is not the urine of the person being tested. A trier of fact if not barred from inferring that a person who uses a device designed to thwart screening tests to provide a urine sample has made a substitution under the statute. (BRIDGES and BRENNAN, concurring.)