automated bromocresol green-based plasma albumin analysis with spectrophotometric readout
bicinchoninic acid protein assay
The BCA protein assay combines the protein-induced biuret reaction in which peptide bonds in the protein reduce Cu2+ ions to Cu+ in a reaction proportional to the amount of protein present, followed by chelation of bicinchoninic acid molecules with Cu+ ions, forming a purple-colored product which can be quantitated by spectrophotometry, i.e., based on the ability of the solution to alter the transmission of light at specific wavelengths in the visible spectrum, that is, to alter the transmission of a specific color of light.
Bradford protein assay
bromocresol green-based urine albumin analysis with spectrophotometric readout