PMID- 28992662 OWN - NLM STAT- MEDLINE DCOM- 20180920 LR - 20191210 IS - 1942-7611 (Electronic) IS - 1942-7603 (Linking) VI - 10 IP - 4 DP - 2018 Apr TI - Sample preparation method for the combined extraction of ethyl glucuronide and drugs of abuse in hair. PG - 701-710 LID - 10.1002/dta.2314 [doi] AB - Often in hair analysis, a small hair sample is available while the analysis of a multitude of structurally diverse substances with different concentration ranges is demanded. The analysis of the different substances often requires different sample preparation methods, increasing the amount of required hair sample. When segmental hair analysis is necessary, the amount of hair sample needed is further increased. Therefore, the required sample amount for a full analysis can quickly exceed what is available. To combat this problem, a method for the combined hair sample preparation using a single extraction procedure for analysis of ethyl glucuronide with liquid chromatography-multistage fragmentation mass spectrometry/multiple reaction monitoring (LC-MS(3) /MRM) and common drugs of abuse with LC-MRM was developed. The combined sample preparation is achieved by separating ethyl glucuronide from the drugs of abuse into separate extracts by fractionation in the solid-phase extraction step during sample clean-up. A full validation for all substances for the parameters selectivity, linearity, limit of detection, limit of quantification, accuracy, precision, matrix effects, and recovery was successfully completed. The following drugs of abuse were included in the method: Amphetamine; methamphetamine; 3,4-methylenedioxy-N-methylamphetamine (MDMA); 3,4-methylenedioxyamphetamine (MDA); 3,4-methylenedioxy-N-ethylamphetamine (MDE); morphine; 6-monoacetylmorphine; codeine; acetylcodeine; cocaine; benzoylecgonine; norcocaine; cocaethylene; methadone; 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) and methylphenidate. In conclusion, as only 1 sample preparation is needed with 1 aliquot of hair, the presented sample preparation allows an optimal analysis of both ethyl glucuronide and of the drugs of abuse, even when the sample amount is a limiting factor. CI - Copyright (c) 2017 John Wiley & Sons, Ltd. FAU - Meier, Ulf AU - Meier U AUID- ORCID: 0000-0002-8284-9467 AD - Forensic Chemistry and Toxicology, Institute of Forensic Medicine of the University of Basel, Basel, Switzerland. FAU - Briellmann, Thomas AU - Briellmann T AD - Forensic Chemistry and Toxicology, Institute of Forensic Medicine of the University of Basel, Basel, Switzerland. FAU - Scheurer, Eva AU - Scheurer E AUID- ORCID: 0000-0002-2742-0422 AD - Forensic Chemistry and Toxicology, Institute of Forensic Medicine of the University of Basel, Basel, Switzerland. FAU - Dussy, Franz AU - Dussy F AD - Forensic Chemistry and Toxicology, Institute of Forensic Medicine of the University of Basel, Basel, Switzerland. LA - eng PT - Journal Article PT - Validation Study DEP - 20171127 PL - England TA - Drug Test Anal JT - Drug testing and analysis JID - 101483449 RN - 0 (Glucuronates) RN - 0 (Illicit Drugs) RN - 17685-04-0 (ethyl glucuronide) SB - IM MH - Chromatography, Liquid/methods MH - Glucuronates/analysis/*isolation & purification MH - Hair/*chemistry MH - Humans MH - Illicit Drugs/analysis/*isolation & purification MH - Limit of Detection MH - Mass Spectrometry/*methods MH - Solid Phase Extraction/*methods MH - Substance Abuse Detection/*methods OTO - NOTNLM OT - combined extraction OT - drugs of abuse OT - ethyl glucuronide OT - hair analysis OT - sample preparation EDAT- 2017/10/11 06:00 MHDA- 2018/09/21 06:00 CRDT- 2017/10/10 06:00 PHST- 2017/03/29 00:00 [received] PHST- 2017/09/19 00:00 [revised] PHST- 2017/09/19 00:00 [accepted] PHST- 2017/10/11 06:00 [pubmed] PHST- 2018/09/21 06:00 [medline] PHST- 2017/10/10 06:00 [entrez] AID - 10.1002/dta.2314 [doi] PST - ppublish SO - Drug Test Anal. 2018 Apr;10(4):701-710. doi: 10.1002/dta.2314. Epub 2017 Nov 27.