For quantitative determination of arginase activity and screen for its inhibitors. Key Features: Sensitive and accurate. Detection limit: 0.3 U/L for 2 hr arginase reaction in 96-well assay format. Simple and high-throughput. The procedure involves incubation of the provided substrate with the sample in a microplate followed by the addition of the coloring reagent. Can be readily automated as a high-throughput assay for thousands of samples per day. Method: OD430nm. Samples: Enzyme preparations, serum, plasma, tissue culture etc. Species: All. Procedure: Assay takes 2 hrs. Kit size: 100 tests. Detection limit: 1 U/L (0.3 U/L for 2 hr reaction) .