Is it necessary to fast before a liver function test?
Dec 30, 2024
Source: Cainiu Health
Dr. Gao Jun
Introduction
In general, a liver function test requires fasting. During a liver function examination, doctors usually ask patients to fast before the test because after food intake, the liver participates in the digestive process, such as glycogen synthesis and breakdown, and fat metabolism. These activities can affect the concentration of related components in the blood, thereby interfering with the accuracy of liver function test results.
Generally, a liver function test requires fasting. The detailed explanation is as follows:
During a liver function test, doctors usually require patients to fast before the examination because after food intake, the liver participates in the digestive process, such as synthesis and breakdown of liver glycogen, fat metabolism, etc., which can affect the concentration of related components in the blood, thereby interfering with the test results of liver function indicators. For example, consuming high-fat foods can elevate blood lipid levels, thus affecting the accuracy of blood lipid-related indicators in liver function tests. Additionally, eating can stimulate gastrointestinal secretions, such as gastric acid and insulin, which may also interfere with the measurement of liver function indicators.
It is advisable to maintain regular eating habits in daily life, avoid overeating, and reduce the intake of high-fat, high-sugar, and high-salt foods to reduce the burden on the liver. At the same time, regular physical examinations should be conducted to detect and address liver problems promptly.
