Dr. Calum MorrisonMAJIDAH MAHMOUD HAMID ALFAHMI2022-05-282022-05-2839840https://drepo.sdl.edu.sa/handle/20.500.14154/37677Assessing the usefulness of solid-phase microextraction (SPME) for methadone and its metabolites analysis in urine samples using HPLC/SPME fibre tipThesis