Quantification of total protein levels in cell and tissue lysates, as well as purified protein levels, is essential in laboratory research. The Advanced Protein Assay and the Precision Red Advanced Protein Assay are highly recommended for measuring proteins in both formats. The Advanced Protein Assay offers a low detection limit (0.25 µg protein/ml sample) and highly similar readings between the same amounts of different purified proteins. The Precision Red Advanced Protein Assay is less sensitive, but more compatible with detergents, and offers similar readings across different purified proteins. In comparison to the Bradford assay, these assays read different purified proteins with two-fold greater accuracy. Learn more about protein assays through Cytoskeleton, Inc.'s motor protein resouce directory by clicking on the options below.