PMID- 19168553 OWN - NLM STAT- MEDLINE DCOM- 20090316 LR - 20211020 IS - 1530-8561 (Electronic) IS - 0009-9147 (Print) IS - 0009-9147 (Linking) VI - 55 IP - 3 DP - 2009 Mar TI - Disposition of MDMA and metabolites in human sweat following controlled MDMA administration. PG - 454-62 LID - 10.1373/clinchem.2008.117093 [doi] AB - BACKGROUND: Understanding the excretion of 3,4-methylenedioxymethamphetamine (MDMA) and metabolites in sweat is vital for interpretation of sweat tests in drug treatment, criminal justice, and workplace programs. METHODS: Placebo, low (1.0 mg/kg), and high (1.6 mg/kg) doses of oral MDMA were given double-blind in random order to healthy volunteers (n = 15) with histories of MDMA use. Participants resided on the closed clinical research unit for up to 7 days after each dose. Volunteers wore PharmChek sweat patches (n = 640) before, during, and after controlled dosing. Patches were analyzed by solid phase extraction and GC-MS for MDMA, methylenedioxyamphetamine (MDA), 4-hydroxy-3-methoxyamphetamine (HMA), and 4-hydroxy-3-methoxymethamphetamine (HMMA). Limits of quantification (LOQ) were 2.5 ng/patch for MDMA and 5 ng/patch for HMA, HMMA, and MDA. RESULTS: MDMA was the primary analyte detected in 382 patches (59.7%), with concentrations up to 3007 ng/patch. MDA was detected in 188 patches (29.4%) at <172 ng/patch, whereas no HMMA or HMA was detected; 224 patches (35.0%) and 60 patches (9.4%) were positive for MDMA and MDA, respectively, at the 25-ng/patch threshold proposed by the Substance Abuse and Mental Health Services Administration. CONCLUSIONS: Sweat testing was shown to be an effective and reliable method for monitoring MDMA use in this controlled MDMA administration study. However, variability in sweat excretion suggests that results should be interpreted qualitatively rather than quantitatively. These data provide a scientific database for interpretation of MDMA sweat test results. FAU - Barnes, Allan J AU - Barnes AJ AD - Chemistry and Drug Metabolism and Office of Scientific Director, Intramural Research Program, National Institute on Drug Abuse, NIH, Baltimore MD 21224, USA. FAU - De Martinis, Bruno S AU - De Martinis BS FAU - Gorelick, David A AU - Gorelick DA FAU - Goodwin, Robert S AU - Goodwin RS FAU - Kolbrich, Erin A AU - Kolbrich EA FAU - Huestis, Marilyn A AU - Huestis MA LA - eng GR - Z01 DA000468-04/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, N.I.H., Intramural PT - Research Support, Non-U.S. Gov't DEP - 20090123 PL - England TA - Clin Chem JT - Clinical chemistry JID - 9421549 RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Adolescent MH - Adult MH - Female MH - Humans MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*administration & dosage/*metabolism/pharmacokinetics MH - Sweat/*metabolism PMC - PMC2669283 MID - NIHMS104703 EDAT- 2009/01/27 09:00 MHDA- 2009/03/17 09:00 PMCR- 2010/03/01 CRDT- 2009/01/27 09:00 PHST- 2009/01/27 09:00 [entrez] PHST- 2009/01/27 09:00 [pubmed] PHST- 2009/03/17 09:00 [medline] PHST- 2010/03/01 00:00 [pmc-release] AID - clinchem.2008.117093 [pii] AID - 10.1373/clinchem.2008.117093 [doi] PST - ppublish SO - Clin Chem. 2009 Mar;55(3):454-62. doi: 10.1373/clinchem.2008.117093. Epub 2009 Jan 23.