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Related Experiment Videos

Time for tea, anyone?

M Turner1, P McCrory, A Johnston

  • 1Centre for Health, Exercise and Sports Medicine, University of Melbourne, Australia.

British Journal of Sports Medicine
|September 27, 2005
PubMed
Summary
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Consuming Mate de Coca tea can lead to positive urine tests for benzoylecognine, a cocaine metabolite. This study confirms that drinking the coca leaf tea results in detectable benzoylecognine levels within 24 hours.

Area of Science:

  • Pharmacology
  • Toxicology
  • Analytical Chemistry

Background:

  • Cocaine use is screened for via urine tests detecting benzoylecognine.
  • Mate de Coca tea, made from coca leaves, has been anecdotally linked to positive benzoylecognine tests.

Observation:

  • Research was commissioned by The Jockey Club in Great Britain due to positive benzoylecognine tests in jockeys.
  • Urine samples were collected from individuals within 24 hours after drinking 250 ml of Mate de Coca tea.

Findings:

  • All analyzed urine samples tested positive for benzoylecognine.
  • Three distinct analytical methods were employed to detect benzoylecognine, all yielding positive results.

Implications:

  • The consumption of Mate de Coca tea can cause false positives in cocaine screening tests.

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  • This finding is crucial for sports doping control and forensic toxicology.
  • Further research may be needed to establish detection thresholds and differentiate between tea consumption and illicit cocaine use.