Used in biochemical and medical research to quantitatively measure iduronate 2-sulfatase (IDS) enzyme levels in rat samples. This assay is particularly useful in studies related to lysosomal storage disorders, such as Hunter syndrome (Mucopolysaccharidosis II), where IDS enzyme activity is deficient. The kit enables researchers to evaluate enzyme expression, monitor disease progression, and assess the efficacy of potential therapies in preclinical animal models. It is commonly applied in neuroscience, metabolic disease research, and pharmaceutical development.