Widely used in biological research and biopharmaceutical applications, this protein solution serves as a stabilizer for enzymes, antibodies, and other proteins in assay buffers and storage solutions. It prevents protein loss due to adsorption onto tube surfaces and helps maintain activity during dilution and incubation steps. Commonly added to immunoassays such as ELISA, Western blotting, and immunohistochemistry, it blocks nonspecific binding sites on membranes and microplates, reducing background noise and improving signal specificity. It is also used in cell culture media to bind and transport hormones, vitamins, and fatty acids, supporting cell growth and viability. In diagnostic kits, it acts as a reference standard and a carrier protein for low-concentration analytes. Due to its low cost and minimal interference in most biochemical reactions, it is a preferred choice for diluting antibodies and other reagents in routine laboratory workflows.