Normal liver function values
Disease description:
I have a history of hepatitis and have been taking medication for recovery. I would like to ask the doctor, what is the normal range for liver function tests?
Doctor's answer (1)
Dr. Yang Ziqi
Liver function tests typically include multiple indicators to assess the liver's metabolic, synthetic, excretory, and detoxification functions. Below are some common liver function tests and their normal reference ranges:
1. Transaminases: The normal values for alanine aminotransferase (ALT) and aspartate aminotransferase (AST) are generally less than 40 U/L. These indicators are important markers reflecting the extent of liver cell damage.
2. Bilirubin: The normal range for total bilirubin is 1.71 to 17.1 μmol/L; direct bilirubin is normally 1.71 to 7 μmol/L; and indirect bilirubin is normally 1.7 to 13.7 μmol/L. Changes in bilirubin levels reflect the liver's metabolic function and bile excretion.
3. Proteins: Normal total protein levels range from 60 to 80 g/L, albumin levels from 30 to 55 g/L, and globulin levels from 20 to 30 g/L. Changes in protein levels reflect the liver's synthetic function.
4. Other indicators: Cholinesterase, alkaline phosphatase, gamma-glutamyl transferase, and others also have their respective normal ranges.
These values may vary slightly depending on the laboratory. If test results fall outside the normal range, it may indicate a liver problem, and prompt medical attention is recommended.
