Is the five-item liver function test performed by blood draw?

　　Liver function tests (five-item panel) are usually performed via blood draw. The details are as follows:

　　Whether you suspect abnormal liver function or want to determine whether you have hepatitis B, a five-item liver function test requires a blood draw. The five items include alanine aminotransferase (ALT), aspartate aminotransferase (AST), direct bilirubin, indirect bilirubin, and total bilirubin. Blood testing helps identify liver function abnormalities, assess the degree of liver damage, and assist in diagnosing and differentiating various liver diseases.

　　Fasting is required for the blood test; therefore, it's recommended not to eat after 10 PM the night before. Additionally, avoid taking medications that may harm the liver prior to the test to prevent interference with results. It’s also important to avoid testing during menstruation, as this may affect accuracy. Maintaining healthy lifestyle habits, balanced nutrition, and regular physical activity is recommended.

　　Daily care should also focus on local health—avoid strenuous exercise, maintain a light diet, and refrain from consuming spicy or irritating foods such as garlic, hot pot, mustard, etc. Adequate rest is essential; avoid excessive fatigue to protect overall health.