“…The bioavailability and pharmacokinetic profiles of these two galantamine formulations were evaluated with a hairless guinea pig model and a sensitive and high-throughput method is required to complete the study. It is widely recognized that current HPLC-MS/MS (Nirogi, Kandikere, Mudigonda, & Maurya, 2007;Park et al, 2012;Steiner, 2012;Suresh, Mullangi, & Sukumaran, 2014;Verhaeghe, Diels, de Vries, De Meulder, & de Jong, 2003;Zhou, Liu, Huang, & Liu, 2014) and UPLC-MS/MS (Noetzli, Ansermot, Dobrinas, & Eap, 2012) methods allow for shorter run times and small sample size, but the significantly higher instrument cost limits their application. For more complex biological matrices, two HPLC-UV methods (Claessens, van Thiel, Westra, & Soeterboek, 1983;Tencheva, Yamboliev, & Zhivkova, 1987) were first reported in the 1980s as well as two HPLC-fluorescence methods (Malakova et al, 2007;Zhang et al, 2007).…”