G-Biosciences’ RED 660 Protein Assay is a single reagent colorimetric assay based on a proprietary dye-metal complex reagent. The ready-to-use reagent allows for the analysis of total protein concentration and the generation of reproducible results. The assay detects proteins in the range of 50 to 2000 µg/ml and can be performed with 0.5 µg protein. While compatible with most detergents, its compatibility can be enhanced by using G-Biosciences’ Neutralizer.