Albumin is a carrier protein found in the blood, that binds and carries a variety of hydrophobic molecules, such as cholesterol, fatty acids, bilirubin, drugs, toxins), transition metal ions, and others with consequent implications for their solubilisation, transport, metabolism, and detoxification. Anti-albumin antibodies are used to determine the level of human albumin in human serum or other biological fluids by immunochemical or immunohistological (IHC) techniques. It also is used in the development and manufacturing of various qualitative and quantitative assays based on RID, IEP, ELISA, latex enhanced immunoturbidimetric assays, ouchterlony double diffusion, western blot and precipitin assay intending to estimate albumin in various disease conditions in humans.