The enzyme 200 U/L is high and may be caused by liver and gallbladder diseases, skeletal muscle diseases, or by taking certain medications. Glutaminase is an enzyme that is involved in protein metabolism in the human body. When liver cells are destroyed, it can be released into the blood in large quantities, causing an increase in the activity of the enzyme in the blood. The normal range of AAT is 5-40 U/L for men and 5-35 U/L for women. When the presence of 200 U/L of alanine aminotransferase indicates a high level, it may be caused by hepatobiliary diseases such as cirrhosis, acute viral hepatitis, chronic viral hepatitis, hepatocellular carcinoma, alcoholic hepatitis, as well as skeletal muscle diseases such as dermatomyositis, and disease factors such as pulmonary infarcts and renal infarcts, and may also be caused by the use of medications such as isoniazid and rifampicin. It is recommended to go to the hospital and ask the doctor to make a judgment if there is an elevation of ghrelin.