PMID- 33293960 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201210 IS - 1687-8760 (Print) IS - 1687-8779 (Electronic) IS - 1687-8760 (Linking) VI - 2020 DP - 2020 TI - A Validated Method for the Simultaneous Determination of Methamphetamine and 3,4-Methylenedioxy-N-methamphetamine in Blood-Based Liquid Chromatography-Tandem Mass Spectrometry. PG - 8862679 LID - 10.1155/2020/8862679 [doi] LID - 8862679 AB - A liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method has been validated for the simultaneous determination of methamphetamine (MA) and 3,4-methylenedioxy-N-methamphetamine (MDMA) in the blood sample. Under the optimal experimental conditions, the concentration of MA can be determined in the range from 1 microg/L to 5000 microg/L with the method detection limit (MDL) of 0.31 microg/L. The range from 0.5 to 500 microg/L is observed for the determination of MDMA with the MDL down to 0.25 microg/L. The practical applicability of the method is performed with the recovery ranging from 85.3% to 94% for MA and from 86.9% to 95.5% for MDMA. At the different concentrations of drugs, the relative standard deviations (RSD) for both MA and MDMA are lower than 5.7%. The method was applied to analyse 1995 blood samples that had been collected from the Forensic Medicine Centre of Ho Chi Minh City. The results showed 1.75% positive with MA and 0.25% positive with MDMA. These two drugs take 10% of the total drugs positive samples. By using deuterium-labelled methamphetamine-d5 and 3,4-methylenedioxy-N-methamphetamine-d5 as the internal standards in the determination and the use of MS/MS in multiple reaction monitoring mode signal readout, the method exhibits robustness specificity and can be applied in simultaneous determination of MA and MDMA in blood with high selectivity and sensitivity. CI - Copyright (c) 2020 Dinh-Vu Le et al. FAU - Le, Dinh-Vu AU - Le DV AUID- ORCID: 0000-0003-2193-6193 AD - Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Str. Go Vap, Ho Chi Minh City 70000, Vietnam. FAU - Nguyen, Trong-Tuan AU - Nguyen TT AD - Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Str. Go Vap, Ho Chi Minh City 70000, Vietnam. AD - Forensic Medicine Centre of Ho Chi Minh City, 336 Tran Phu. District 5, Ho Chi Minh City 70000, Vietnam. FAU - Nguyen, Van-Trong AU - Nguyen VT AD - Faculty of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Str. Go Vap, Ho Chi Minh City 70000, Vietnam. LA - eng PT - Journal Article DEP - 20201126 PL - Egypt TA - Int J Anal Chem JT - International journal of analytical chemistry JID - 101519424 PMC - PMC7714609 COIS- The authors report no conflicts of interest in this work. EDAT- 2020/12/10 06:00 MHDA- 2020/12/10 06:01 PMCR- 2020/11/26 CRDT- 2020/12/09 06:13 PHST- 2020/07/08 00:00 [received] PHST- 2020/09/08 00:00 [revised] PHST- 2020/11/12 00:00 [accepted] PHST- 2020/12/09 06:13 [entrez] PHST- 2020/12/10 06:00 [pubmed] PHST- 2020/12/10 06:01 [medline] PHST- 2020/11/26 00:00 [pmc-release] AID - 10.1155/2020/8862679 [doi] PST - epublish SO - Int J Anal Chem. 2020 Nov 26;2020:8862679. doi: 10.1155/2020/8862679. eCollection 2020.