The Human Fetuin-A ELISA (enzyme-linked immunosorbent assay) kit is intended for the quantitative determination of human fetuin-A, also known as alpha-2-HS glycoprotein (AHSG), in serum, plasma, cell culture supernatant, tissue extraction, and urine. The measurement of fetuin-A in serum or plasma aids in the diagnosis of some cancers and genetically inherited deficiencies of this serum protein.