Used in biomedical research to quantify levels of human γ-glutamyl hydrolase (GGH) in biological samples such as serum, plasma, and tissue lysates. This ELISA kit enables researchers to study GGH enzyme activity indirectly by measuring protein concentration, which is critical in understanding its role in folate metabolism and the regulation of antifolate drugs used in cancer therapy. It is widely applied in oncology research, particularly in studies related to methotrexate resistance, where GGH expression levels influence drug efficacy. The assay supports high-throughput analysis with high sensitivity and specificity, making it suitable for clinical research and drug development settings.