Widely used in biological research and biopharmaceutical manufacturing, this protein solution serves as a stabilizer for enzymes, antibodies, and other proteins in assays and storage buffers. It is commonly added to immunoassays, such as ELISA and Western blotting, to block nonspecific binding sites on membranes and microplates, reducing background noise. In cell culture applications, it helps protect cells from damage and supports cell growth by binding and transporting nutrients, hormones, and fatty acids. It is also used as a carrier protein for sensitive analytes in diagnostic kits and as a standard in protein quantification methods like the Bradford assay. Due to its low cost and low reactivity, it is preferred in many laboratory workflows involving protein detection and analysis.