The liver is the largest organ, weighing about 1.2kg. An essential clue to metabolism in the body. The liver also detoxification function but the detoxification function of the liver is limited, so when overloaded it will be hurt (reaction is elevated liver enzyme). Causes of elevated liver enzymes include viral hepatitis, fatty liver, alcoholic liver disease, drug-induced hepatitis, hepatotoxicity, hereditary liver disease, hepatomegaly, liver failure, ...
High ALT levels almost always reflect a problematic liver condition. However, normal ALT levels do not mean that the liver is normal. This depends on where the blood sample is taken. Liver enzymes may also change during the day, in the morning and at noon, higher in the evening; If you have hepatitis and get a sample at the time of the first few hours of drinking, the liver enzyme levels are several times higher than those who do not drink alcohol; If the liver has been damaged many years ago due to heavy alcohol consumption, the blood test results are normal but may still damage the liver.
As mentioned above, there are many causes of elevated liver enzymes, so in addition to the results of laboratory tests need to be a clinically accurate diagnosis. Please note that your liver enzyme elevation is not high (51.0 U / L), but if you drink a lot of alcohol before, you should stop drinking immediately and should be periodically monitored for liver health.