GLP-1 (1-37) (human) is primarily used in research settings to study its biological activity and potential therapeutic applications. It is a precursor to the active form of GLP-1, which plays a significant role in glucose metabolism and insulin secretion. Researchers utilize this peptide to investigate its effects on pancreatic beta cells, appetite regulation, and glycemic control. It is also studied for its potential in developing treatments for type 2 diabetes and obesity, as it mimics the natural incretin hormone that enhances insulin release in response to meals. Additionally, GLP-1 (1-37) is used in understanding the mechanisms of GLP-1 receptor activation and its downstream signaling pathways.