Used in biomedical research to quantify rat fibronectin levels in biological samples such as serum, plasma, cell culture supernatants, and tissue homogenates. This ELISA kit is particularly useful in studies related to extracellular matrix dynamics, wound healing, inflammation, and tissue remodeling. It enables researchers to assess fibronectin expression changes in experimental models of fibrosis, cancer progression, and autoimmune diseases. The assay provides a sensitive and specific measurement, supporting high-throughput analysis in preclinical studies involving rat models.