Used in biomedical research to measure dipeptidyl peptidase IV (DPP IV) enzyme activity in rat samples. Helps in studying metabolic disorders such as diabetes, as DPP IV regulates incretin hormones that affect insulin secretion. Commonly applied in preclinical studies to evaluate drug effects on DPP IV levels in serum, plasma, or tissue extracts. Supports research in immunology and inflammation, as DPP IV (also known as CD26) plays a role in immune cell regulation. Enables high-throughput screening in pharmacological studies focused on DPP IV inhibitors.