Use

Assessment of possible adulteration of a urine specimen submitted for drug of abuse testing, including evaluation of creatinine concentration for normalization purposes, pH, specific gravity, presence or absence of oxidants, and presence or absence of nitrite. This aids in detecting manipulation of urine samples that may distort drug testing results. Reference cutoff concentrations: oxidants 200 mg/L, nitrites 500 mg/L. Uses creatinine for normalization. ([mayocliniclabs.com](https://www.mayocliniclabs.com/test-catalog/Overview/29345?utm_source=openai))