The liver and kidneys are very important organs of the human body, and the state of liver and kidney function can be assessed by liver function and kidney function tests. The liver function and kidney function are affected by more factors, before the blood test you need to do the following: 1, need to fasting, liver and kidney function test before to keep fasting, the first night after eight o’clock do not eat again, the next day do not eat breakfast, directly fasting to the hospital for blood tests. 2, do not drink alcohol, because alcohol may affect part of the chemical reaction, resulting in inaccurate test results, must The first day of the test is the night before the test to ensure a good night’s sleep, do not stay up late, do not overstress, because these factors may lead to inaccurate test results.