Used in immunological research to quantify levels of B cell activation factor (BAFF) in biological samples from rats. This ELISA kit enables researchers to study the role of BAFF in B cell development, immune regulation, and autoimmune diseases such as lupus or rheumatoid arthritis in rat models. It is commonly applied in preclinical studies to assess immune responses, evaluate therapeutic interventions, and monitor changes in BAFF expression under experimental conditions. The kit provides a reliable and sensitive method for detecting soluble BAFF in serum, plasma, or cell culture supernatants, supporting investigations in immunology, pharmacology, and disease mechanism studies.