Production and Quality Control of Indium-111 Pentetreotide Radiopharmaceutical in Iran

111In pentetreotide (OctreoScanTM) radiopharmaceutical is used extensively for the detection of a variety of cancers in medicine. Octerotide is a pharmaceutical with a structure similar to somatostatin which is administrated via intravenous injection in an 111In labeled form. This radiopharmaceutical acts as a theranostic agent with binding to somatostatin receptors. Over the last decade, 111In pentetreotide has remained the most widely used radiopharmaceutical for the scintigraphic detection and staging of primary and metastatic neuroendocrine tumors. In this study, application of this radiopharmaceutical as well as the production and quality control strategies was investigated precisely. Briefly, the labeling yield of 111In pentetreotide was determined before the administration to the rodents. The incorporation of the radionuclide was measured by RTLC and the radiochemical purity was measured by HPLC. Due to the high thermodynamic stability constants for DTPA and In3+, the formation yield of 111In pentetreotide under the terms applied in this study was found to be high.