Objective To prepare a molecularly imprinted monolithic column for selectively enriching methotrexate(MTX) in human serum in order to facilitate the RP-HPLC analysis.Methods Melamine was employed as an analogue template to prepare the molecularly imprinted monolithic column by in-situ polymerization.Methacrylic acid was used as a function monomer and ethylene glycol dimethacrylate as a cross linker during the polymerization process.The recognition ability of the imprinted monolithic column towards MTX was e...