How long should medication be stopped before liver function examination

Before liver function examination, it is usually necessary to stop taking medication for 3-7 days, and the specific time depends on the type of medication and metabolic characteristics.

Liver function tests mainly evaluate liver function by detecting indicators such as transaminase, bilirubin, and protein in the blood. Some drugs may interfere with the test results, such as antibiotics, antipyretic analgesics, anti tuberculosis drugs, etc., which may cause elevated transaminase levels, and hormone drugs may affect protein synthesis. Common drugs that need to be discontinued include acetaminophen tablets, isoniazid tablets, rifampicin capsules, etc., which may cause liver enzyme abnormalities. Traditional Chinese medicine such as Polygonum multiflorum and Tripterygium wilfordii may also cause changes in liver injury indicators. Three days before the physical examination, alcohol consumption, high-fat diet, and vigorous exercise should be avoided, as these factors may also affect the accuracy of the test. If long-term use of antihypertensive drugs, hypoglycemic drugs, etc. is required due to chronic diseases, medication should not be stopped on one's own. It is recommended to consult a doctor in advance to adjust the medication plan. On the day of the physical examination, it is necessary to maintain an empty stomach for 8-12 hours, but a small amount of water can be consumed. For patients with abnormal liver function, it is recommended to undergo further examinations such as ultrasound and hepatitis virus screening. It is important to avoid staying up late and overworking in daily life, and to supplement foods rich in vitamin B such as whole grains and lean meat in moderation, which can help with liver repair.