Bovine serum albumin (BSA) and human plasma-derived human serum albumin (pHSA) have been widely used as raw materials in the IVD industry. However, as serum-derived components, they inherently contain impurities such as IgG, proteases, hormones, and fatty acids, which can lead to false positive results, especially for some test items that require higher sensitivity and higher accuracy. OsrHSA (Recombinant Human Serum Albumin) - a superior, rice-derived alternative designed to enhance the performance of diagnostic products.