Used in biomedical research to detect and quantify Human Protein Tyrosine Phosphatase (PTP), particularly CD148, in biological samples such as cell lysates, serum, or plasma. This ELISA kit enables researchers to study the role of PTP in cellular signaling pathways, especially those involved in immune regulation, cell growth, and differentiation. It is commonly applied in studies related to autoimmune diseases, cancer, and inflammation where dysregulation of tyrosine phosphorylation is a key factor. The assay provides a sensitive and specific method for monitoring changes in PTP expression or activity under experimental conditions, supporting both basic research and drug development efforts targeting phosphatase activity.