Used in biomedical research to measure glucose-dependent insulinotropic polypeptide (GIP) levels in biological samples such as serum or plasma. This assay helps investigate gut hormone responses related to insulin secretion, glucose metabolism, and pancreatic function. Commonly applied in studies of type 2 diabetes, obesity, and metabolic syndrome to evaluate the incretin system. Supports drug development and evaluation of therapies targeting GIP receptors or gastrointestinal hormone pathways. Provides quantitative data for both in vivo and in vitro experiments.