Alanine aminotransferase 39 U/L does not require medication. The normal range of alanine aminotransferase is 5-40U/L. The presence of alanine aminotransferase >40U/L may be physiological or pathological. 1. Physiological factors: fatigue, lack of sleep, heavy alcohol consumption and other factors may lead to high alanine aminotransferase. After improving lifestyle habits, alanine aminotransferase will usually drop to the normal range gradually. 2. Pathological factors: Hepatobiliary system diseases such as viral hepatitis, fatty liver, cirrhosis, bile duct stones, etc. will appear alanine aminotransferase elevation. Such patients should consult the gastroenterology department in time, further improve the abdominal ultrasound and other examinations, clear diagnosis and treatment. Warm tips: alanine aminotransferase 39U/L is within the normal range, no need to take medication. When the test found that alanine aminotransferase is elevated, you should develop good habits, pay attention to rest, if necessary, timely gastroenterology consultation.