Used for the quantitative detection of Protein Tyrosine Phosphatase (PTP) activity in rat biological samples such as tissue lysates, serum, or cell culture supernatants. This ELISA kit enables researchers to assess changes in PTP activity associated with signal transduction pathways, metabolic regulation, and immune responses. It is commonly applied in studies related to insulin resistance, diabetes, inflammation, and cancer research involving rat models. The assay provides a sensitive and specific measurement, allowing high-throughput screening and evaluation of enzyme activity modulation in response to drugs or genetic alterations.