Clinical often come across some patients, for various reasons do not want to laboratory tests, such as some people are afraid that the test results are not ideal, increase the idea of people are afraid of laboratory tests once too much blood, the body is too much “loss”; there are also some people think that hepatitis can not be good, laboratory tests are the same, take some medicine on the line. In fact, these are incorrect, lack of scientific basis, and do not recognize the importance of regular liver function tests. Liver function test can not only assist doctors to diagnose the disease, but also to understand the severity of the disease, prognosis and guide the use of medication are very helpful. The result of each test can only reflect the situation at the time of the test, and the condition is constantly changing, so regular tests and dynamic observation of changes in liver function can better understand the condition and ensure the correct use of medication. How often is it appropriate to take liver function test? Generally speaking, due to the rapid change of acute hepatitis, it is more appropriate to have a laboratory test once a week, and the content of the laboratory test can be chosen according to the condition, such as aminotransferase, bilirubin, transpeptidase, and so on. During the recovery period, when jaundice basically subsides and transaminases are close to normal, the interval between tests can be extended to once a month until the liver function is normal for three consecutive times. In the case of hepatitis B, hepatitis C, etc., it is best to review every six months within two years after clinical recovery and viral indicators turn negative. Chronic hepatitis cirrhosis stable period, every one and a half to three months to review, active period every half a month to a month laboratory tests, severe hepatitis and cirrhosis stage combined with ascites or gastrointestinal bleeding, the condition of the person in critical condition, according to the specific circumstances at any time laboratory tests to guide the clinical. For the current existence of a large number of asymptomatic hepatitis B virus carriers, it is best to comprehensively check the liver function every six months, including two half, DNA, ultrasound, etc., to play a monitoring role, so as to early detection of problems, early treatment, so as not to miss the opportunity of the disease. If in the treatment period, should be based on the specific circumstances, shorten the laboratory time. Clinical often see some asymptomatic no obvious symptoms, and therefore did not pay attention, the result is often in a few years after the development of cirrhosis before being found. The above is a generalization, but the clinical situation is so varied that no generalization can be made, and it is still advisable to have regular follow-ups and ask the doctor to make a decision according to the specific situation.