Used in biomedical research to accurately measure insulin levels in rat serum or plasma samples. Widely applied in studies related to diabetes, glucose metabolism, and endocrine function. Enables researchers to assess pancreatic beta-cell activity, insulin secretion, and the effects of drugs or experimental treatments on insulin production. Suitable for high-throughput screening in preclinical trials and metabolic disease models. Provides a reliable, sensitive, and specific quantification method essential for advancing understanding of insulin regulation in rodent models.