Used in biomedical research to quantify Retinol Binding Protein 4 (RBP4) levels in sheep biological samples such as serum, plasma, or tissue extracts. This ELISA kit enables researchers to study metabolic disorders, insulin resistance, and vitamin A metabolism in ovine models. It is particularly useful in veterinary research and animal health studies focusing on metabolic syndrome, obesity, and diabetes-related conditions in sheep. The assay provides a sensitive and specific measurement of RBP4, supporting investigations into the role of this protein as a potential biomarker for metabolic and inflammatory diseases in ruminants.