Drinking yogurt for blood tests for liver function may have an effect on the results, leading to elevated blood lipids, liver enzymes and other indicators, but just a sip may not have a significant effect. Food can have a certain effect on indicators such as blood glucose, blood lipids, bilirubin, transaminases, etc. Therefore, you should fast for 8 to 12 hours before taking a blood test for liver function, and on the day of the test, you should fast and drink less to ensure the accuracy of the results. Yogurt is rich in protein, fat and other substances that need to be digested and absorbed after entering the body and metabolized in the liver. Drinking yogurt before checking the liver function may lead to the elevation of transaminases, lipids and other indicators, affecting the judgment of the results. However, if only a sip is taken, the amount consumed is small and may not have an effect. If the patient’s liver function is normal when examined after drinking yogurt, there is usually no problem. If the index is high, it is recommended that the test be repeated after fasting to determine the cause of the high level. Liver function tests should be prepared in strict accordance with the doctor’s instructions to avoid affecting the test results.