PMID- 15939177 OWN - NLM STAT- MEDLINE DCOM- 20050809 LR - 20131121 IS - 0379-0738 (Print) IS - 0379-0738 (Linking) VI - 152 IP - 1 DP - 2005 Aug 11 TI - The prevalence of MDMA/MDA in both hair and urine in drug users. PG - 73-7 AB - The prevalence and age distribution of 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) in hair samples by gas chromatography/mass spectrometry (GC/MS) were studied. The recoveries obtained from hair were 97% and 99% for MDMA and MDA, respectively. The inter- and intra-assay precision and accuracy were determined. Out of 791 hair samples, 44 (5.6 %) contained MDMA and/or MDA. Out of these 44 subjects, urinalyses from 35 were negative for both MDMA and MDA, while only 9 were positive. We also evaluated concentrations of MDMA and MDA, and the metabolite-to-parent drug ratios. This study showed that the abuse of MDMA or MDA was found principally among young adults and male abusers. We found the epidemiology of ecstasy users in Korea between March 2002 and April 2003. FAU - Han, Eunyoung AU - Han E AD - Department of Narcotics Analysis, National Institute of Scientific Investigation, 331-1 Shinwol 7-Dong, Yang-Chun Gu, Seoul, South Korea. hago@nisi.go.kr FAU - Yang, Wonkyung AU - Yang W FAU - Lee, Jaesin AU - Lee J FAU - Park, Yonghoon AU - Park Y FAU - Kim, Eunmi AU - Kim E FAU - Lim, Miae AU - Lim M FAU - Chung, Heesun AU - Chung H LA - eng PT - Journal Article PL - Ireland TA - Forensic Sci Int JT - Forensic science international JID - 7902034 RN - 0 (Hallucinogens) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - 3,4-Methylenedioxyamphetamine/*analysis MH - Adult MH - Female MH - Fluorescence Polarization Immunoassay MH - Forensic Medicine MH - Gas Chromatography-Mass Spectrometry MH - Hair/*chemistry MH - Hallucinogens/analysis MH - Humans MH - Male MH - Middle Aged MH - N-Methyl-3,4-methylenedioxyamphetamine/*analysis MH - Substance Abuse Detection/*methods MH - Urinalysis EDAT- 2005/06/09 09:00 MHDA- 2005/08/10 09:00 CRDT- 2005/06/09 09:00 PHST- 2004/05/11 00:00 [received] PHST- 2005/02/15 00:00 [revised] PHST- 2005/03/07 00:00 [accepted] PHST- 2005/06/09 09:00 [pubmed] PHST- 2005/08/10 09:00 [medline] PHST- 2005/06/09 09:00 [entrez] AID - S0379-0738(05)00169-6 [pii] AID - 10.1016/j.forsciint.2005.03.010 [doi] PST - ppublish SO - Forensic Sci Int. 2005 Aug 11;152(1):73-7. doi: 10.1016/j.forsciint.2005.03.010.