What does alanine aminotransferase (ALT) mean?
Apr 11, 2023
Source: Cainiu Health
Dr. Jiang Weimin
Introduction
Alanine aminotransferase (ALT) is an enzyme primarily found in liver cells, cardiac muscle cells, and muscle cells, among other tissues. It participates in the metabolic process of transferring alanine to aspartate during amino acid metabolism. In daily life, if elevated levels of alanine aminotransferase (ALT) are detected—especially when accompanied by other abnormal test results—it is essential to consult a doctor.
Alanine aminotransferase (ALT) is an enzyme primarily found in liver cells, cardiac muscle cells, and skeletal muscle cells. It participates in the metabolic process of transferring alanine to aspartate during amino acid metabolism.
When there is cellular damage or disease in tissues such as the liver, heart, or muscles, alanine aminotransferase (ALT) is released into the bloodstream. Therefore, it can serve as an indicator for diagnosing liver diseases. The most common method is measuring its concentration in serum to assist in diagnosing liver injury. The normal reference range for ALT in healthy adult males is 10–50 U/L, and in females, it is 5–35 U/L.
In addition, factors such as staying up late, excessive alcohol consumption, and intense physical exercise may also lead to elevated levels of alanine aminotransferase (ALT). However, this elevation typically resolves gradually after these activities cease and does not cause significant harm to liver function.
In daily life, if increased alanine aminotransferase (ALT) levels are detected—especially when accompanied by other abnormal test results—it is essential to consult a doctor at a hospital to identify the underlying cause and receive appropriate treatment.
