What are the standards for liver function examination values

The standards for liver function examination values vary depending on the testing items, and common indicators include alanine aminotransferase, aspartate aminotransferase, total bilirubin, direct bilirubin, total protein, albumin, etc. The normal range of liver function indicators may vary slightly depending on hospital laboratory standards, but typically alanine aminotransferase is 7-40U/L, aspartate aminotransferase is 13-35U/L, total bilirubin is 3.4-20.5 μ mol/L, direct bilirubin is 0-6.8 μ mol/L, total protein is 60-80g/L, and albumin is 35-55g/L. The standard for liver function physical examination values needs to be determined based on specific testing items, and different hospitals or laboratories may use different testing methods and reagents, so the reference range may vary slightly. Alanine transaminase mainly exists in liver cells and is a sensitive indicator reflecting liver cell damage. Its elevation is common in viral hepatitis, drug-induced liver injury, and other situations. Aspartate transaminase is not only present in the liver, but also in the myocardium and skeletal muscle, and its elevation may be caused by liver disease or myocardial injury. Total bilirubin reflects the metabolism of bilirubin, and an increase may indicate hemolytic diseases or liver and gallbladder system diseases. Elevated direct bilirubin is usually associated with cholestasis. Total protein and albumin reflect liver synthesis function, and a decrease may indicate chronic liver disease or malnutrition. Before liver function examination, one should avoid vigorous exercise, alcohol consumption, and taking drugs that may affect the results. During the examination, fasting for 8-12 hours is necessary to ensure the accuracy of the results.

Liver function tests are an important means of evaluating liver health status, and it is recommended to undergo regular liver function tests to monitor liver function. In daily life, one should maintain a regular schedule, avoid staying up late and overworking, limit alcohol intake, reduce high-fat and high sugar diets, supplement high-quality protein and vitamins appropriately, and avoid drug abuse. If abnormal liver function indicators are found, timely medical attention should be sought for further examination. After identifying the cause, targeted treatment and follow-up monitoring should be carried out under the guidance of a doctor.