aspartate aminotransferase

variants: also aspartate transaminase

Medical Definition of aspartate aminotransferase

: an enzyme that promotes transfer of an amino group from glutamic acid to oxaloacetic acid and that when present in abnormally high levels in the blood is a diagnostic indication of heart attack or liver disease Mildly to moderately elevated serum levels of aspartate aminotransferase, alanine aminotransferase, or both are the most common and often the only laboratory abnormality found in patients with nonalcoholic fatty liver disease.— Paul Angulo, The New England Journal of Medicine, 18 Apr. 2002 Liver function tests, including prothrombin time, were normal except for aspartate transaminase of 129 U/L.— Ruiyong Yuan et al., The Journal of the American Medical Association, 16 Jan. 2002 abbreviation AST

called also glutamic-oxaloacetic transaminase

Learn More About aspartate aminotransferase

Dictionary Entries Near aspartate aminotransferase


aspartate aminotransferase

aspartic acid

See More Nearby Entries 

Cite this Entry

“Aspartate aminotransferase.” Medical Dictionary, Merriam-Webster, Accessed 22 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!