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 in therapeutic formulations, including vaccines, monoclonal antibodies, and recombinant proteins, preventing protein aggregation and surface adsorption during storage and delivery. 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 supports cell growth by acting as a carrier for hormones, lipids, and other biomolecules. Its plant-based origin avoids ethical concerns associated with blood-derived products and provides a scalable, animal-free solution for clinical and industrial applications.