<prompt> Half-life of albumin is36-48 hours3-5 days5-10 days20 days  <response>: Albumin has a high capacity for binding water approximately 18 mlg, an intravasal residence time of approximately 4 h presupposing physiological capillary permeability as well as an in vivo half-life of approximately 18-21 days . Ref: guyton and hall textbook of medical physiology 12 edition page number: 418,419,420 