Used in biomedical research to quantify FoxO3 protein levels in cell lysates, tissue extracts, and biological fluids. Enables investigation of FoxO3's role in cellular processes such as apoptosis, oxidative stress response, autophagy, and aging. Widely applied in studies related to cancer, neurodegenerative diseases, diabetes, and longevity. Supports drug development and mechanistic studies by providing a reliable method to monitor FoxO3 expression and activation under experimental conditions.