Used in research and development for studying inflammatory diseases, particularly those involving the interleukin-13 (IL-13) pathway. It serves as a reference standard in assays to measure anti-IL-13 activity, aiding in the evaluation of therapeutic antibodies targeting IL-13. Commonly applied in asthma, atopic dermatitis, and other allergic disease models to neutralize IL-13 and assess downstream biological effects. Supports quality control in biopharmaceutical production by providing a consistent benchmark for potency and binding affinity.