Used for detecting and quantifying 3-ketosteroid (KS) activity in plant samples, this ELISA kit enables researchers to monitor steroid metabolism in physiological studies. It is widely applied in plant hormone research, especially in understanding brassinosteroid biosynthesis pathways. The kit supports high-throughput analysis in studies related to plant growth, development, and stress responses. It is also useful in screening plant mutants with altered steroid metabolism and in evaluating the effects of environmental factors on hormone levels.