Coca tea consumption causes positive urine cocaine assay

@article{Mazor2006CocaTC,
  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},
  year={2006},
  volume={13},
  pages={340-341}
}
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.

TLDR
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.

Does Lidocaine Cause False Positive Results on Cocaine Urine Drug Screen?

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

The Effects of Herbs, Spices and Foodstuffs on Urine Screens for Drug Abuse by Immunoassay

TLDR
It was found that none of the 31 products had modified the drug screens using FPIA to reduce or increase the level of the spiked drug in the urine sample, and it was concluded that these products did not produce falsenegative results with urine drug screenings by means of FPIA.

Defending Positive Cocaine Tests

TLDR
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

TLDR
Potential false-positive results and false-negative results that occur with immunoassays of amphetamines, cannabinoids, cocaine, opiates, and phencyclidine and with alcohol, benzodiazepines, and tricyclic antidepressants are discussed.

Urine drug screening: practical guide for clinicians.

TLDR
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.

Drugs in oral fluid – an evaluation of the release of cocaine and cocaine derivatives from oral drug depots into oral fluid.

TLDR
The research offered new insights into the present knowledge on the release of cocaine and derivatives from drug depots into OF and presented an alternative non-invasive technique for analysing cocaine in OF and tissues.

References

SHOWING 1-7 OF 7 REFERENCES

Identification and quantitation of alkaloids in coca tea.

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

TLDR
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.

TLDR
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
  • Medicine
    Journal of occupational medicine. : official publication of the Industrial Medical Association
  • 1993

Coca tea and urinalysis for cocaine metabolites.

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

TLDR
It is indicated that in rats, DPP is mainly excreted by active tubular secretion and that renal tubular reabsorption contributes to renal excretion of PXP with glomerular filtration.

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