Abstract
Gamma-hydroxybutyric acid (GHB), usually reported as rape drug in drug-facilitated sexual assaults (DFSA), is an endogenous substance in human body and is also found in many beverages. This may lead to data misinterpretation in forensic cases. Herein, we aimed to collect evidence about natural GHB presence in 13 energy drinks (ED). After a liquid-liquid extraction with acidic ethyl acetate, samples were derivatized with BSTFA 1% TMCS. Analyses were carried out by a GC-MS system in SIM mode (GHB, 233, 234, 143 and 147 m/z; GHB-d6, 239, 240, 120 and 206m/z). GHB was present in all the samples at very low concentrations ranging from 98 to 197ng/mL. Thus, GHB presence in ED is not exclusively related to exogenous addition. Since the GHB levels are far lower than the minimum active dose (i.e., 0.5g), it is not expected to induce any effect.
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