Recombinant Human Serum Albumin from Oryza sativa (OsrHSA) is widely used in biopharmaceutical and cell culture applications as a safe and effective alternative to human-derived serum albumin. It serves as a stabilizer and carrier protein in therapeutic formulations, including vaccines, monoclonal antibodies, and recombinant protein drugs, helping to maintain their stability and shelf life. Due to its high purity and low risk of pathogen contamination, OsrHSA is ideal for use in cell culture media, especially in the production of viral vaccines and stem cells, where consistency and safety are critical. It also functions as a blocking agent and excipient in diagnostic kits and assays. Its plant-based production ensures a scalable, ethical, and animal-free source of albumin, making it suitable for clinical and industrial applications requiring high-quality raw materials.