Is an alanine aminotransferase (ALT) level of 13 U/L normal?

Generally, a glutamic-pyruvic transaminase (GPT) level of 13 U/L falls within the normal range. The detailed explanation is as follows:

A GPT level of 13 U/L lies well within the clinically accepted normal range, indicating that there is no significant liver cell damage. Glutamic-pyruvic transaminase is primarily found in the cytoplasm of liver cells. Under normal conditions, only a very small amount is released into the bloodstream. When liver cells are damaged due to inflammation or other injuries, intracellular GPT is released in large quantities into the blood, leading to elevated levels. A test result of 13 U/L suggests that the structural integrity of liver cells remains intact and that the liver's basic metabolism and functions are operating stably. There is no need for concern regarding organic liver disease based on this value.

Liver health can be maintained through simple daily practices: maintaining regular sleep patterns and avoiding staying up late to allow the liver sufficient time for repair during nighttime; reducing intake of high-fat and high-sugar foods while increasing consumption of fresh fruits, vegetables, and high-quality proteins to lessen the metabolic burden on the liver; avoiding the indiscriminate use of medications or supplements with unclear ingredients to minimize chemical irritation to liver cells; and engaging in moderate aerobic exercise, which promotes systemic blood circulation and supports normal liver function. Maintaining these healthy habits over the long term helps keep liver-related indicators stable.