PMID- 23471370 OWN - NLM STAT- MEDLINE DCOM- 20131105 LR - 20211021 IS - 1618-2650 (Electronic) IS - 1618-2642 (Print) IS - 1618-2642 (Linking) VI - 405 IP - 12 DP - 2013 May TI - Oral fluid and plasma 3,4-methylenedioxymethamphetamine (MDMA) and metabolite correlation after controlled oral MDMA administration. PG - 4067-76 LID - 10.1007/s00216-013-6848-7 [doi] AB - Oral fluid (OF) offers a noninvasive sample collection for drug testing. However, 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) in OF has not been adequately characterized in comparison to plasma. We administered oral low-dose (1.0 mg/kg) and high-dose (1.6 mg/kg) MDMA to 26 participants and collected simultaneous OF and plasma specimens for up to 143 h after dosing. We compared OF/plasma (OF/P) ratios, time of initial detection (t first), maximal concentrations (C max), time of peak concentrations (t max), time of last detection (t last), clearance, and 3,4-methylenedioxyamphetamine (MDA)-to-MDMA ratios over time. For OF MDMA and MDA, C max was higher, t last was later, and clearance was slower compared to plasma. For OF MDA only, t first was later compared to plasma. Median (range) OF/P ratios were 5.6 (0.1-52.3) for MDMA and 3.7 (0.7-24.3) for MDA. OF and plasma concentrations were weakly but significantly correlated (MDMA: R(2) = 0.438, MDA: R(2) = 0.197, p < 0.0001). Median OF/P ratios were significantly higher following high dose administration: MDMA low = 5.2 (0.1-40.4), high = 6.0 (0.4-52.3, p < 0.05); MDA low = 3.3 (0.7-17.1), high = 4.1 (0.9-24.3, p < 0.001). There was a large inter-subject variation in OF/P ratios. The MDA/MDMA ratios in plasma were higher than those in OF (p < 0.001), and the MDA/MDMA ratios significantly increased over time in OF and plasma. The MDMA and MDA concentrations were higher in OF than in plasma. OF and plasma concentrations were correlated, but large inter-subject variability precludes the estimation of plasma concentrations from OF. FAU - Desrosiers, Nathalie A AU - Desrosiers NA AD - Chemistry and Drug Metabolism Section, Clinical Pharmacology and Therapeutic Research Branch, NIDA IRP, Baltimore, MD 21224, USA. FAU - Barnes, Allan J AU - Barnes AJ FAU - Hartman, Rebecca L AU - Hartman RL FAU - Scheidweiler, Karl B AU - Scheidweiler KB FAU - Kolbrich-Spargo, Erin A AU - Kolbrich-Spargo EA FAU - Gorelick, David A AU - Gorelick DA FAU - Goodwin, Robert S AU - Goodwin RS FAU - Huestis, Marilyn A AU - Huestis MA LA - eng GR - ZIA DA000412-13/Intramural NIH HHS/United States GR - ZIA DA000468-06/Intramural NIH HHS/United States GR - Z01 DA000414-10/Intramural NIH HHS/United States GR - Z01 DA000414-11/Intramural NIH HHS/United States GR - Z01 DA000412-10/Intramural NIH HHS/United States GR - ZIA DA000414-12/Intramural NIH HHS/United States GR - ZIA DA000412-12/Intramural NIH HHS/United States GR - ZIA DA000468-08/Intramural NIH HHS/United States GR - ZIA DA000468-09/Intramural NIH HHS/United States GR - Z01 DA000412-11/Intramural NIH HHS/United States GR - Z01 DA000468-05/Intramural NIH HHS/United States GR - ZIA DA000414-13/Intramural NIH HHS/United States GR - ZIA DA000468-07/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural DEP - 20130308 PL - Germany TA - Anal Bioanal Chem JT - Analytical and bioanalytical chemistry JID - 101134327 RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Administration, Oral MH - Adolescent MH - Adult MH - Female MH - Humans MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/administration & dosage/blood/*metabolism/*pharmacokinetics MH - Saliva/*metabolism MH - Substance Abuse Detection MH - Young Adult PMC - PMC3638040 MID - NIHMS449773 EDAT- 2013/03/09 06:00 MHDA- 2013/11/06 06:00 PMCR- 2014/05/01 CRDT- 2013/03/09 06:00 PHST- 2012/12/31 00:00 [received] PHST- 2013/02/14 00:00 [accepted] PHST- 2013/02/11 00:00 [revised] PHST- 2013/03/09 06:00 [entrez] PHST- 2013/03/09 06:00 [pubmed] PHST- 2013/11/06 06:00 [medline] PHST- 2014/05/01 00:00 [pmc-release] AID - 10.1007/s00216-013-6848-7 [doi] PST - ppublish SO - Anal Bioanal Chem. 2013 May;405(12):4067-76. doi: 10.1007/s00216-013-6848-7. Epub 2013 Mar 8.