Urinary excretion of cocaine and benzoylecgonine following oral ingestion in a single subject / R.C. Baselt, R. Chang
- Journal of Analytical Toxicology 11 (1987) 2 (March-April), p. 81–82
- PMID: 3573730
- DOI: 10.1093/jat/11.2.81
Abstract
A 25 mg oral dose of cocaine HCl given to a single volunteer resulted in a peak urinary cocaine concentration of 269 ng/mL at 1 h, and a peak benzoylecgonine concentration of 7,940 ng/mL at 12 h. Urine benzoylecgonine concentrations remained in excess of 300 ng/mL for 48 h. We conclude that small, oral doses of cocaine, potentially undetectable to the user, may cause positive urine test results for at least 48 h using routine detection methods.
