“…Various analytical techniques for LD-HCL determination in biological and pharmaceutical samples have been published, including the chromatographic methods,gas chromatography(GC) determination of LD-HCl in whole blood (Keenaghan, 1968), (Edhorn, 1971), (Asada, 1979) (Hattori,Yamamoto, & Yamada, 1991) (Watanabe, Namera, Yashiki, Iwasaki, & Kojima, 1998), from serum (Kruczek, 1981) (Prat , & Bruguerolle, 1986) (Baniceru, Croitoru, & Popescu, 2004), from plsma (Björk , Pettersson, & Osterlöf, 1990), in human plasma and urine (Ohshima& Takayasu, 1999), in human urine (Koster, Hofman, & Jong, 1998), to distinguish the drug from its thermal degradation produts (Stavchansky, Eghbali & Geary, 1987), in pharmaceutical preparations (Tarli P, Benocci & Neri, 1969), and Forced Degradation of Lidocaine HCl by NMR Spectroscopy and GC-FID Methods (Kadioglu, Atila, Serdar, Gultekin, & Alcan, 2013), thin-layer chromatography (TLC)for the Determination of Hydrocortisone Acetate and Lidocaine in a Pharmaceutical Preparation (Dołowy, Kulpińska-Kucia, & Pyka, 2014), high-performance liquid chromatography (HPLC) and TLC (Živanović, Živanov-Stakić, & Radulović, 1998) (Abdelwahab, Nouruddin, Abdelkawy, Emam, 2016), HPLC, in plasma with solid phase extraction and UV detection (Kang, Jun, & McCall, 1999 ), in pharmaceuticals (Smith & Nuessle, 1981) (Waraszkiewicz, Milano, & DiRubio, 1981) (Atay & Öztop, 1997) (Parissi-Poulou & Panderi, 1999) (Gebauer, McClure, & Vlahakis, 2001) (Liawruangrath, Liawruangrath, & Pibool, 2001) (Malenovic, Medenica, Ivanovic, Jancic, & Markovic, 2005) (Zivanovic, Zecevic, Markovic, Petrovic, & Ivanovic, 2005) (Salas, Talero, Rabasco, & González, 2008) (Stojanović, Malenović, Marković, Ivanović, & Medenica, 2010) …”