Used in research and development of therapeutic candidates targeting the IL-6 receptor pathway, particularly in autoimmune and inflammatory diseases. Demonstrates high specificity in blocking IL-6 signaling, making it valuable for preclinical studies in conditions such as rheumatoid arthritis, lupus, and cytokine release syndrome. Serves as a reference standard in bioassays, pharmacokinetic studies, and biosimilar development. Also utilized in flow cytometry and ELISA applications to evaluate binding affinity and functional activity of anti-IL-6R antibodies.