Patent ID: 6334995
Filing Date: 2002-01-01
Classification: A61K,A61P

Abstract:
A process for the preparation of a technetium-99m radiolabelled diethylene triamine pentaacetic acid diester kit for the diagnosis of renal disorders which comprises:(a) Adding stannous ion to a dilute aqueous solution of diethylene triamine pentaacetic acid diester; (b) Keeping the resultant solution obtained in step (a) in an evacuated rubber sealed injection vial flushed with nitrogen; (c) lyophilizing the said kit and storing the lyophilized product as obtained in step (b) at 4Â° C.; (d) radiolabelling the said lyophilized product obtained with Tc-99m by allowing the kit to attain the room temperature before addition of 99m TcO4; (e) shaking the kit vigorously to obtain the radiolabelled product available for use within a period of one hour.