Liver function tests generally consist of nine items. For the liver function test, the nurse or hospital laboratory staff will usually choose to tie a tourniquet around the arm above the elbow, puncture a needle through the vein at the elbow, connect a vacuum blood collection tube to draw a few milliliters of blood, and then take it to the instrument to be tested. The cost of liver function test is divided into three items, one is the cost of blood sampling, also known as venous blood collection fee; the second is the cost of vacuum blood collection tubes; and the third is the cost of instrumental testing. Taking the current charges of the capital city tertiary hospital as an example, the fee for blood collection is 5 yuan, the vacuum blood collection tube is 0.7 yuan, and the fee for 9 items of liver function tests is 61 yuan, totaling 66.7 yuan. Generally, the liver function test is done before 10-11 a.m., go to the hospital on an empty stomach to have blood drawn, and get the results a few hours later. When needed, liver function can also be checked urgently, urgent check liver function can get the result within one hour, the cost is higher than the ordinary test is 99 yuan, the total down is 104.7 yuan.