Human Serum Albumin (HSA) is the most abundant protein in blood, making up around half of the serum protein. HSA has many functions, including transport of hormones, fatty acids, and other compounds, buffering of pH, and maintenance of oncotic pressure. It is used extensively in research worldwide. Monobind's HSA and Gamma Globulin (IGIV) come from fractionators as downgraded materials for the diagnostic and research markets. They are high quality and dependable.