Used in biomedical research to quantify levels of Lung Resistance Protein (LRP) in cell lysates, tissue extracts, and biological fluids. Helps investigate multidrug resistance mechanisms in cancer, particularly in lung, ovarian, and breast carcinomas. Supports studies on chemotherapy response and tumor progression by measuring LRP expression, which correlates with poor drug retention and treatment failure. Enables researchers to evaluate potential reversal agents for drug resistance and assess prognostic markers in oncology research.