Radiolysis of 2-[18F]fluoro-2-deoxy-d-glucose ([18F]FDG) and the role of ethanol, radioactive concentration and temperature of storage

► We characterize the decomposition profile of [18F]FDG. ► Ethanol concentrations of 0.1% assures the stability of [18F]FDG. ► We established the transport and storage temperatures from 2-8 °C and 15-30 °C. ► Successive aliquot withdraws from [18F]FDG multidose vials was evaluated.