Used to measure gallic acid equivalent (GAE) activity in plant samples, this ELISA kit enables researchers to quantify antioxidant capacity in herbs, leaves, fruits, and other botanical materials. It is widely applied in phytochemical studies, quality control of herbal products, and evaluation of plant-based antioxidants for nutraceutical and pharmaceutical development. The assay supports high-throughput analysis, making it suitable for screening plant extracts during drug discovery or functional food research.