Used in research and development of therapies targeting interleukin-5 (IL-5), this antibody helps study inflammatory responses associated with eosinophil activation. It serves as a reference in assays evaluating anti-IL-5 drug candidates, particularly for asthma and other eosinophilic disorders. Commonly used in preclinical testing to benchmark binding affinity, neutralization capacity, and pharmacokinetics. Supports validation of analytical methods in biopharmaceutical development.