Used for the quantitative measurement of Granule Guanylate Cyclase (pGC) levels in human biological samples such as serum, plasma, or tissue homogenates. This research kit is primarily employed in studies related to gastrointestinal physiology and diseases, particularly those involving intestinal fluid regulation and secretory mechanisms. It supports investigation into conditions like irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and colorectal cancer, where pGC expression may be altered. The assay enables researchers to assess pGC as a potential biomarker and to explore its role in cell signaling pathways mediated by guanosine triphosphate (GTP) conversion to cyclic GMP (cGMP). Widely used in academic research, drug development, and preclinical studies focusing on gut hormone function and enteric nervous system activity.