Prealbumin

**Definition:** A tetrameric protein, molecular weight between 50,000 and 70,000, consisting of 4 equal chains, and migrating on electrophoresis in 3 fractions more mobile than serum albumin. Its concentration ranges from 7 to 33 per cent in the serum, but levels decrease in liver disease.

**Tree numbers:** - D12.776.034.841.450 - D12.776.124.727.750

**Synonyms:** - Proalbumin - Transthyretin