Human Albumin is a sterile, purified preparation of serum albumin protein derived from pooled human plasma. It constitutes about 60% of the total protein content in plasma and plays a vital physiological role in maintaining oncotic pressure and transporting hormones, fatty acids, and drugs. In clinical use, it is available as an injectable solution in varying concentrations—commonly 5%, 20%, and 25%. Unlike synthetic volume expanders, Human Albumin is biologically compatible and does not carry the same risk of anaphylaxis or coagulopathy, making it an ideal candidate in many critical care settings.