Used for the quantitative determination of rat progastrin-related peptide (progastrin converting enzyme) activity in biological samples such as serum, plasma, or tissue homogenates. This ELISA kit is specifically designed to measure the functional activity of the enzyme involved in gastrin processing, aiding in gastrointestinal research and studies related to gastric acid secretion, gut hormone regulation, and related pathologies. It is commonly applied in preclinical studies involving rat models of digestive disorders, endocrine dysfunction, or drug development targeting gastrointestinal hormone pathways. The assay enables high-throughput, sensitive, and specific measurement, making it suitable for both academic and pharmaceutical research settings.