Used for the quantitative measurement of sulfotransferase (SULT) enzyme activity in human biological samples such as serum, plasma, or tissue extracts. This ELISA kit enables researchers to assess SULT activity in metabolic studies, particularly in drug development and toxicology research where sulfonation plays a key role in the metabolism of hormones, drugs, and xenobiotics. It is widely applied in clinical laboratories and pharmaceutical research to evaluate liver function, endocrine disorders, and the impact of genetic polymorphisms on sulfation capacity. The assay supports high-throughput screening and provides a reliable tool for monitoring changes in SULT activity under various physiological and pathological conditions.