For quantitative determination of ferric reduction antioxidant potential (FRAP). Key Features: Sensitive and accurate. Linear detection range: 0.5 to 180 µM Fe³⁺ reduction potential in 96-well plate assay. Simple and high-throughput. The procedure involves addition of a single working reagent and incubation for 40 min. Can be readily automated as a high-throughput assay for thousands of samples per day. Improved reagent stability and versatility. The optimized formulation has greatly enhanced reagent and signal stability. Method: OD590nm. Samples: Plant extracts, foods, vitamins, supplements, and biological samples such as serum, plasma, and urine. Species: All. Procedure: Assay takes 40 min. Kit size: 250 tests. Detection limit: 0.5 µM.