Measurement of intracellular ribavirin mono-, di- and triphosphate using solid phase extraction and LC–MS/MS quantification
Keywords: RBV, ribavirin; NA, nucleoside analog; MP, monophosphate; DP, diphosphate; TP, triphosphate; IS, internal standard; hPBMC, human peripheral blood mononuclear cells; SPE, solid phase extraction; RBC, red blood cells; DBS, dried blood spots; UP, ultrapure;