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WITHDRAWN: Ratio of Morphine and Codeine over Antihistamines in Urine by LC-MS/MS for Determining Opiate Metabolites from Cold Syrups

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Abstract Determining the origin of opiate and/or opiate metabolites from cold syrups in individual urine specimens is vital for patients, doctors and law enforcement. Ten participants were orally administered cold… Click to show full abstract

Abstract Determining the origin of opiate and/or opiate metabolites from cold syrups in individual urine specimens is vital for patients, doctors and law enforcement. Ten participants were orally administered cold syrups with three different formulations. The results revealed that people consuming cold syrups containing codeine did not routinely pass urine tests for opiates (cutoff value: 2000 ng mL−1) and did not have a morphine–codeine ratio

Keywords: codeine; cold syrups; opiate metabolites; morphine codeine; metabolites cold

Journal Title: Forensic Science International
Year Published: 2020

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