Used in research and development for therapeutic antibodies targeting inflammatory and autoimmune diseases. Specifically applied in studies involving interleukin-6 (IL-6) signaling pathways, which play a key role in conditions such as rheumatoid arthritis, lupus, and certain cancers. Serves as a reference standard in immunoassays and binding affinity tests to evaluate new anti-IL-6 antibody candidates. Also utilized in pharmacokinetic and pharmacodynamic modeling during preclinical development. Supports quality control in biosimilar development and helps establish assay comparability in biopharmaceutical manufacturing.