Used in research and development for allergic diseases, this antibody shows high affinity binding to IgE, making it valuable in studying mechanisms of allergic responses. It is applied in assays to detect, quantify, or neutralize free IgE in biological samples, supporting the evaluation of anti-IgE therapeutics. Commonly used in immunoassays, cell-based assays, and pharmacokinetic studies during preclinical and clinical development. Helps assess target engagement and biological activity of IgE-targeting drugs. Also serves as a reference standard in quality control for biopharmaceutical manufacturing.