Normal values ​​of eight liver function tests

The eight liver function tests are an important means of evaluating the health of the liver. Through this test, we can understand whether the liver's metabolic function and detoxification ability are normal. The eight liver function tests usually include alanine aminotransferase (ALT), aspartate aminotransferase (AST), total protein (TP), albumin (ALB), total bilirubin (TBIL), direct bilirubin (DBIL), alkaline phosphatase (ALP) and gamma-glutamyl transpeptidase (GGT). Each indicator has its specific normal range to help doctors judge the health of the liver.

Alanine aminotransferase and aspartate aminotransferase are markers of liver cell damage. Under normal circumstances, the normal value of ALT is generally between 0-40U/L, and that of AST is between 0-40U/L. When these two indicators are elevated, it may indicate liver cell damage, such as hepatitis or cirrhosis. Total protein and albumin are mainly used to evaluate the synthetic function of the liver. The normal value of total protein is usually 60-80g/L, while the normal range of albumin is 35-55g/L. If these two indicators are lower than normal, it may mean that the synthetic function of the liver is weakened.

Bilirubin is a metabolic product after the destruction of red blood cells, and the liver is responsible for its conversion and excretion. The normal value of total bilirubin is generally 5-21μmol/L, and direct bilirubin should be less than 7μmol/L. Elevated bilirubin levels may cause jaundice, indicating problems with the liver or biliary system. Alkaline phosphatase and γ-glutamyl transpeptidase mainly reflect the condition of the bile duct. The normal value of ALP is usually 40-150U/L, while GGT is 10-60U/L. If these two indicators are elevated, it may indicate bile duct obstruction or intrahepatic cholestasis.

Knowing the normal values ​​of the eight liver function tests can help us pay more attention to our health. Regular liver function tests can detect potential liver problems early so that appropriate measures can be taken to intervene. Maintaining a healthy lifestyle, such as a reasonable diet, moderate exercise, quitting smoking and limiting alcohol, can help maintain liver health. If the test results are abnormal, it is recommended to consult a doctor in time to obtain professional guidance and treatment plans. Through scientific management and a positive attitude towards life, we can better protect our livers and enjoy a healthy life.