Bovine Serum Albumin (BSA) is widely used in laboratory settings as a protein standard in assays like ELISA and Bradford assays due to its stability and consistency. It serves as a blocking agent to prevent non-specific binding in immunoassays and Western blotting. In cell culture, BSA is added to media to provide nutrients and protect cells from damage. It is also used as a stabilizer in enzyme reactions and diagnostic kits. Additionally, BSA is employed in molecular biology techniques, such as PCR, to enhance enzyme activity and improve reaction efficiency. Its versatility and reliability make it a staple in various scientific applications.