Document Detail

Assessment of chronic exposure to MDMA in a group of consumers by segmental hair analysis.
MedLine Citation:
PMID:  16418703     Owner:  NLM     Status:  MEDLINE    
The suitability of segmental hair analysis of MDMA to monitor past chronic exposure to the drug was investigated in a follow-up study of ecstasy consumers. The purpose, among others, was to look for an objective biomarker of the history of drug consumption. Thirteen naturally colored hair samples were used to assess possible association between hair concentration of MDMA in 1-, 5-, and 9-cm segments and self-reported use in the last 1, 6, and 12 months. Agreement between the self-reported data given by the subjects on their "ecstasy" use in the previous month and MDMA hair concentration was good (r = 0.92) in all the examined subjects, with the exception of 2 individuals who declared a high consumption of the drug (12 tablets in the last month). When comparing the subjects' declaration of tablets consumed per month within the last 6 months, concordance with the hair MDMA values decreased and no correlation seemed to exist between the mean number of tablets consumed in the last 12 months and the concentration of MDMA in hair. However, when grouping subjects with a similar level of declared drug use (independently of whether in the previous month, last 6 months and last 12 months) and comparing the data with the mean MDMA concentrations found in the corresponding hair segments, an excellent level of agreement was found in groups of subjects consuming <5 tablets of MDMA per month (r = 0.93). Although the present findings were obtained from a small group of individuals and are intended as preliminary results, we can conclude that a cutoff of 0.5 ng MDMA per mg hair seems reasonable to assess drug consumption, unless the level of consumption was once per month in the last 12 months. Doubling the monthly consumption increases hair MDMA by around 1 ng/mg hair up to a level of 4 consumed tablets a month. It does not seem possible to draw definitive conclusions from higher concentrations in hair samples.
Simona Pichini; Sandra Poudevida; Mitona Pujadas; Ester Menoyo; Roberta Pacifici; Magí Farré; Rafael de la Torre
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Therapeutic drug monitoring     Volume:  28     ISSN:  0163-4356     ISO Abbreviation:  Ther Drug Monit     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-01-18     Completed Date:  2006-06-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7909660     Medline TA:  Ther Drug Monit     Country:  United States    
Other Details:
Languages:  eng     Pagination:  106-9     Citation Subset:  IM    
Istituto Superiore di Sanità, Roma, Italy.
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MeSH Terms
Case-Control Studies
Hair / chemistry*
Hallucinogens / analysis*
N-Methyl-3,4-methylenedioxyamphetamine / analysis*
Substance Abuse Detection / methods*
Reg. No./Substance:
0/Hallucinogens; 42542-10-9/N-Methyl-3,4-methylenedioxyamphetamine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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