What is the normal range of alanine aminotransferase

The normal range of alanine aminotransferase is 0-40U/L, and the specific value may vary slightly due to testing methods and laboratory standards. Alanine transaminase is an important indicator reflecting liver cell damage, and its abnormal level may be related to liver disease, drug effects, or physiological fluctuations. The test results of alanine aminotransferase are usually expressed in units per liter of blood, and most medical institutions use 0-40U/L as a reference range. Before testing, it is necessary to fast for 8-12 hours and avoid vigorous exercise or alcohol consumption to avoid interfering with the results. Mild elevation may be caused by staying up late, fatty liver, or catching a cold. When the value is between 40-80U/L, it needs to be evaluated in conjunction with other liver function indicators. If it exceeds 80U/L, it may be related to diseases such as viral hepatitis, drug-induced liver injury, or biliary obstruction, and further examination is needed to clarify the cause. Pregnant women or long-term medication users may experience physiological abnormalities, but persistent abnormalities require vigilance against pathological factors.

Daily abuse of drugs or health products should be avoided, and high-fat diet and alcohol intake should be reduced. Regularly check liver function. If accompanied by symptoms such as fatigue and jaundice, it is recommended to seek medical attention in a timely manner to screen for diseases such as hepatitis and cirrhosis. Healthy individuals can maintain stable liver function through a balanced diet and regular sleep patterns.