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Already in 2001, NRG supported the development of Peptide Receptor Radionuclide Therapy with carrier added Lutetium-177 (Lu-177 c.a.) by the supply of Lutetium-177 trichloride as a radiochemical. Nowadays, Lu-177 no carrier added is preferably used. “Lu-177 n.c.a. has a higher specific activity and thus radiolabeling efficiency, than lu-177 c.a.”, according to Marion Chomet, lead scientist at FIELD-LAB. Chomet and her colleagues are now fine-tuning and finalizing their custom made lutetium-177 n.c.a. process. But there are several challenges and practical considerations that they are facing.