Used in biomedical research to measure glucose-dependent insulinotropic polypeptide (GIP) levels in rat samples. Helps study insulin secretion, glucose metabolism, and gut hormone function. Commonly applied in diabetes research, metabolic studies, and drug development to evaluate how interventions affect incretin hormone release. Provides quantitative data from serum or plasma samples, supporting investigation of pancreatic beta-cell activity and gastrointestinal hormone responses.