The alanine aminotransferase 131U/L is more serious, has exceeded the normal range of more than twice, may be liver disease, heart disease, bone disease, etc., the cause. The normal range value of alanine aminotransferase is usually 0 to 40 U/L, the test result of 131 U/L is more than twice the normal range is more serious. The result of 131U/L is more than twice the normal range, which is more serious. 131U/L may be a result of liver diseases, such as viral hepatitis, toxic hepatitis, cirrhosis, liver cancer, and so on. It can also be heart disease, such as myocardial infarction, myocarditis, etc. caused by elevated alanine aminotransferase. There are many causes of 131U/L alanine aminotransferase, it is recommended to consult a doctor in time to clarify the cause of the disease and follow the doctor’s instructions for treatment.