For rapid, direct determination of urea concentrations in food and beverage samples as well as biological samples. Key Features: Fast and sensitive. Use of 20 µ L sample. Semi-quantitative measurement between 0-1500 mg/L (undiluted) urea. Convenient. No expensive plate or cuvette readers needed. Sample treatment and assay can be performed in under 15 minutes. Method: Visual. Samples: Serum, plasma, urine, etc. Species: All. Procedure: Assay takes approximately 15 min. Kit size: 10 tests.