Used in biomedical research to quantify levels of multidrug resistance-related protein (MRP) in human biological samples such as serum, plasma, or cell lysates. This ELISA kit helps researchers study mechanisms of drug resistance in cancer cells, particularly in tumors that show reduced response to chemotherapy. By measuring MRP expression, scientists can assess the role of this transporter protein in effluxing drugs from cells, contributing to treatment failure. The kit supports studies in oncology, pharmacology, and molecular biology, enabling evaluation of potential drugs that may inhibit MRP function and restore chemosensitivity. It is also used in liver and kidney research to understand MRP involvement in toxin and metabolite transport.