“…Very few studies have been carried out to determine acamprosate in human plasma (Chabenat et al, 1987; Ghosh et al, 2011, 2012; Girault et al, 1990; Hammarberg et al, 2010; Kanala et al, 2013; Luo et al, 2015; Rhee et al, 2008; Xu et al, 2009). Liquid chromatography with fluorescence or electrochemical detection (Chabenat et al, 1987), gas chromatography–mass spectrometry (Girault et al, 1990) and liquid chromatography–tandem mass spectrometry (Ghosh et al, 2011, 2012; Hammarberg et al, 2010; Kanala et al, 2013; Luo et al, 2015; Rhee et al, 2008; Xu et al, 2009) methods were used in the studies. Some of these studies need complex sample preparation procedures such as derivatization, solid‐phase extraction and evaporation with a nitrogen stream (Chabenat et al, 1987; Girault et al, 1990; Kanala et al, 2013; Luo et al, 2015; Xu et al, 2009), while others use basic protein precipitation (Ghosh et al, 2011, 2012; Hammarberg et al, 2010; Rhee et al, 2008).…”