Indicator Explainer
Alanine Aminotransferase
A family of pyridoxal phosphate-dependent enzymes involved in cellular nitrogen metabolism, amino acid metabolism, and liver gluconeogenesis. Alanine aminotransferase specifically and reversibly catalyzes the transfer of an amino group from L-alanine to alpha-ketoglutarate forming pyruvate and L-glutamate.
This page explains what the indicator is and how results are interpreted in general terms. Reference ranges depend on the laboratory, the method, and your own situation — no single “normal value” applies to everyone. This page is health information, not a diagnosis. For symptoms, treatment, or urgent concerns, contact a healthcare professional.
When it is tested
Source: National Cancer Institute, NCI Thesaurus 26.09d, C25293. NCI definition, reproduced without modification under CC BY 4.0. Source identity and definition checked automatically on 2026-10-18. No individual clinical interpretation or human reviewer is asserted.
Reading results
Reference intervals and interpretation depend on the laboratory, specimen, method and clinical context. This source definition is educational information; it does not establish a diagnosis, product approval or suitability for an individual.
Also Known As
References
- NCI Thesaurus 26.09d — Alanine Aminotransferase (C25293)
- Source: National Cancer Institute, NCI Thesaurus 26.09d, C25293. NCI definition, reproduced without modification under CC BY 4.0.
- Early Antiviral Therapy and Hepatocellular Carcinoma Incidence in Chronic Hepatitis B Patients with Normal Alanine Aminotransferase Levels: A Prospective Phase II Study. — Gut Liver, 2026-10-07 (PMID 42839774; literature)