Coca tea consumption causes positive urine cocaine assay

  title={Coca tea consumption causes positive urine cocaine assay},
  author={Suzan S. Mazor and Mark B Mycyk and Brandon K. Wills and Larry D. Brace and Leon Gussow and Timothy Erickson},
  journal={European Journal of Emergency Medicine},
Background Coca tea, derived from the same plant that is used to synthesize cocaine, is commonly consumed in South America and easily obtained in the United States. Objectives To determine whether consumption of coca tea would result in a positive urine toxicology screen for cocaine metabolites. Methods Five healthy adult volunteers consumed coca tea and underwent serial quantitative urine testing for cocaine metabolites by fluorescence polarization immunoassay. The cutoff for a positive assay… 

Analysis of Cocaine and its Metabolites in Urine After Consummation of Coca Tea by Five Subjects and Subsequent Hair Testing.

This study supports the athlete's claims and supports her claims that she had consumed a coca tea in the morning before the competition and all the hair tests were negative for cocaine using a limit of decision at 10 pg/mg.

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There is no evidence that lidocaine or norlidocaine are capable of producing false positive results on standard cocaine urine immunoassays.

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Defending Positive Cocaine Tests

People try to defend positive cocaine test results by claiming they drink herbal tea or visit a dentist who uses procaine as an anesthetic, but Procaine does not contain cocaine and use of procaine cannot result in positive test results.

Urine Drug Screening : Practical Guide for Clinicians REVIEW

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Pagmatic concepts summarized in this article should minimize the potential risks of misinterpreting urine drug screens and the potential pitfalls, such as adulteration, substitution, and dilution of urine samples, which can lead to serious medical or social consequences.

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Identification and quantitation of alkaloids in coca tea.

Determination of cocaine in "Mate de Coca" herbal tea.

The selling of this product is illegal under the provisions of the Control Measures of the 1961 Single Convention of the United Nations because it contains cocaine and carries a potential for abuse.

Quinolones and false-positive urine screening for opiates by immunoassay technology.

Greater attention to the cross-reactivity of quinolones with immunoassays for opiates is needed to minimize the potential for invalid test interpretation.

Mate de coca equals cocaine.

  • A. FlorénJ. Small
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Coca tea and urinalysis for cocaine metabolites.

Pharmacokinetic characteristics of N7-substituted theophylline derivatives and their interaction with quinolone in rats.

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False-positive urine drug screen: beware the poppy seed bagel.