HSA Fraction V - lyophilized, 5 g

Human serum albumin (HSA) is used as a protein supplement in tissue cultures to transport hormones, vitamins, or growth factors and to promote cell growth. In addition, HSA stabilizes the pH of the cell culture medium, promotes cell wall stability, and binds toxic trace elements. HSA is also used to solubilize lipids and as a stabilizer or adjuvant in vaccines.

HSA is a stable, nearly unreactive, small protein with good solubility in water. Due to these properties, it is also used as a concentration standard for calibrating assay methods (e.g., Bradford assay, Lowry assay, biuret reaction) or as a blocking reagent in immunological detection methods (e.g., ELISA, Western blot, ELISpot) as well as in immunohistochemistry.