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AST/ALT ratio. LOINC. 16325-3, 1916-6. The AST/ALT ratio or De Ritis ratio is the ratio between the concentrations of two enzymes, aspartate transaminase (AST) and alanine transaminase, aka alanine aminotransferase (ALT), in the blood of a human or animal. It is used as one of several liver function tests, and measured with a blood test.
In medicine, the presence of elevated transaminases, commonly the transaminases alanine transaminase (ALT) and aspartate transaminase (AST), may be an indicator of liver dysfunction. [ 1][ 2] Other terms include transaminasemia, [ 3] and elevated liver enzymes (though they are not the only enzymes in the liver).
Liver function tests. Liver function tests ( LFTs or LFs ), also referred to as a hepatic panel, are groups of blood tests that provide information about the state of a patient's liver. [ 1] These tests include prothrombin time (PT/INR), activated partial thromboplastin time (aPTT), albumin, bilirubin (direct and indirect), and others.
Alanine transaminase ( ALT) is a transaminase enzyme ( EC 2.6.1.2 ). It is also called alanine aminotransferase ( ALT or ALAT) and was formerly called serum glutamate-pyruvate transaminase or serum glutamic-pyruvic transaminase (SGPT) and was first characterized in the mid-1950s by Arthur Karmen and colleagues. [ 1]
Aspartate transaminase ( AST) or aspartate aminotransferase, also known as AspAT/ASAT/AAT or (serum) glutamic oxaloacetic transaminase ( GOT, SGOT ), is a pyridoxal phosphate (PLP)-dependent transaminase enzyme ( EC 2.6.1.1) that was first described by Arthur Karmen and colleagues in 1954. [ 1][ 2][ 3] AST catalyzes the reversible transfer of ...
The Kell antigen system (also known as the Kell–Cellano system) is a human blood group system, that is, a group of antigens on the human red blood cell surface which are important determinants of blood type and are targets for autoimmune or alloimmune diseases which destroy red blood cells. The Kell antigens are K, k, Kpa, Kpb, Jsa and Jsb. [ 1]
t. e. Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry ...
Modern hospital hematology laboratory. A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or via fingerprick. Multiple tests for specific blood components, such as a glucose test or a cholesterol test, are often grouped together into one test panel called ...