Used in biomedical research to quantify levels of glutathione S-transferase pi (GSTpi) protein in human samples. Helps assess cellular stress responses and detoxification activity in tissues. Commonly applied in studies of cancer, neurodegenerative diseases, and drug resistance, where GSTpi overexpression is a biomarker. Enables researchers to measure changes in GSTpi concentration in response to therapeutic agents or environmental toxins. Suitable for serum, plasma, and cell lysate analysis in laboratory settings.