Urea Assay Kit is a simple, rapid and sensitive assay widely used for quantifying urea in different samples. It is used to test urine, serum, plasma, etc. In this kit, urea is acted on by enzymes to develop product that reacts to generate color. The absorbance is proportional to the urea concentration in the solution. The kit can be used to detect as low as 0.5 nmol per well. It is ideal to be used for quantitative determination of urea and drug effects on urea metabolism.