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• W2022607677 abstract "γ-Hydroxybutyrate (GHB) is an increasingly popular drug of abuse that causes stimulation, euphoria, anxiolysis or hypnosis, depending on the dose used. Low doses of the drug are used recreationally, and also implicated in drug-facilitated sexual assaults. Because of the unusually steep dose–response curves, accidental GHB overdosing, leading to coma, seizures or death can occur. Being a controlled substance, GHB is often substituted with its non-scheduled precursors γ-butyrolactone (GBL) and 1,4-butanediol (BD), which are rapidly metabolized into GHB in the body. Here we describe an assay for GHB, GBL and BD in blood and/or urine samples. GHB and BD were extracted from diluted 200 μL aliquots of samples with t-butylmethylether (plus internal standard benzyl alcohol) in test tubes preloaded with NaCl. After acidification and centrifugation the solvent phase was transferred to a test tube preloaded with Na2SO4, incubated for 30 min, centrifuged again, and evaporated in vacuum. The residue was mixed with N-methyl-N-trimethylsilyl-trifluoroacetamide (MSTFA) in acetonitrile, and injected into a GC–MS. When analyzing GBL, the salting-out step was omitted, and analysis was performed with a GC–FID apparatus. As revealed by the validation data this procedure is suitable for quantitative determination of GHB and its precursors in blood and/or urine samples." @default.
• W2022607677 created "2016-06-24" @default.
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• W2022607677 date "2007-08-01" @default.
• W2022607677 modified "2023-10-16" @default.
• W2022607677 title "Determination of γ-hydroxybutyrate (GHB) and its precursors in blood and urine samples: A salting-out approach" @default.
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• W2022607677 doi "https://doi.org/10.1016/j.forsciint.2007.06.001" @default.
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