Tetracosactide
（重定向自Tetracosactrin）
Tetracosactide (INN) (brand names Synacthen, Cortrosyn), also known as tetracosactrin (BAN) and cosyntropin (USAN), and the acetate ester, tetracosactide acetate (JAN) (brand names Cortrosina, Cortrosyn, Nuvacthen, Synacthen), also known as tetracosactrin acetate (BANM), is a synthetic peptide and analogue of adrenocorticotrophic hormone (ACTH) which is used clinically as a diagnostic agent. It consists of the first 24 (of a total of 39) amino acids of ACTH and retains full function of the parent peptide. Tetracosactide stimulates the release of corticosteroids such as cortisol from the adrenal glands, and is used for the ACTH stimulation test to assess adrenal gland function.