The liver function test is mainly done by blood sampling, which is a method of various biochemical tests to detect various indicators related to liver function and metabolism, and it can generally reflect the basic condition of the liver. The price of liver function test is about 100 yuan. However, if the biochemical routine includes both liver function and kidney function, electrolytes, blood glucose and other indicators, the price is about RMB 200-300. The liver function test is easily disturbed by some factors, so do not eat or drink water before the test, and you need to keep an empty stomach for about 8-12 hours. Do not stay up late 1 night before the test, do not eat spicy and stimulating food, do not eat greasy food, mainly light. Do not drink alcohol or take medicine 1 night before the test, otherwise the test results may be affected. Do not do strenuous exercise about 3 days before the examination, otherwise it may lead to an increase in transaminases, which may affect the results of the examination.