Protein Assays

Accurately quantifying total protein concentration is a key step in most experiments and workflows involving the isolation, separation, and analysis of proteins. We offer a variety of assay reagents, kits, and standards for protein quantitation using fluorescent or colorimetric detection with fluorometers, spectrophotometers, and plate readers. Additionally, our products are offered with dilution-free protein standards for added ease of use and reduced setup time when generating your standard curve. Dilution-free protein standards are a set of prediluted standards packaged in a multichannel pipette-compatible format, allowing you to easily transfer a full dilution series to your microplate at once. No single reagent can be considered the ideal or best protein assay method. Each method has its advantages and disadvantages. Identify, compare, and choose the best protein assay using the protein assay interactive product selector. Click “Learn more” to browse our broad portfolio and  interactive selection tool: filter and compare selections based on sample type, assay time, readout (colorimetric or fluorescent), and compatibility with detergents or reducing agents.