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Coca tea Consumption Causes Positive Urine Cocaine Assay.

Posted Aug 25 2008 6:28pm
Once in awhile I get an email inquiry regarding someone who has consumed Coca Tea and has "failed" a urinalysis on the job. I wanted to share the following abstract and reference for your information. Awareness is important. Coca Tea consumption is becoming more popular in the US with availability on the Internet (Amazon.com being the biggest seller most likely). If you are a Coca Tea drinker, it is important to be knowledgeable:



Coca tea Consumption Causes Positive Urine Cocaine Assay.

Healthcare professionals should consider a history of coca tea ingestion when interpreting urine toxicology results.

* Mazor SS,

* Mycyk MB,

* Wills BK,

* Brace LD,

* Gussow L,

* Erickson T.



Division of Emergency Medicine, Department of Pediatrics, Children's Hospital and Regional Medical Center, Seattle, Washington 98105, USA. suzan.mazor@seattlechildrens.org



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 was chosen at 300 ng/ml, the National Institute on Drug Abuse standard.



RESULTS: Each participant's urine cocaine assay was positive (level exceeding 300 ng/ml) by 2 h after ingestion. Three out of five participants' samples remained positive at 36 h. Mean urine benzoylecgonine concentrations in all postconsumption samples was 1777 ng/ml (95% confidence interval: 1060-2495).



CONCLUSIONS: Coca tea ingestion resulted in a positive urine assay for cocaine metabolite. Healthcare professionals should consider a history of coca tea ingestion when interpreting urine toxicology results.



PMID: 17091055 [PubMed - indexed for MEDLINE]
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