What is the difference between Liver Function Test No. 1 and No. 2?

Apr 10, 2023 Source: Cainiu Health

Dr. Jiang Weimin

Introduction

Liver Function Test No. 1 and No. 2 are two different items in liver function examinations, differing in the tested parameters, evaluation indicators, and associated diseases. Patients who need liver function tests should undergo them under the guidance of a qualified physician. In daily life, it is important to maintain healthy habits, exercise appropriately, and enhance one's immune system.

Liver function test No. 1 and No. 2 are two different items in liver function testing, differing in the tested components, indicators, and diseases they help diagnose. Specific differences are as follows:

1. Different tested components

Liver function test No. 1 refers to the measurement of serum aspartate aminotransferase (AST) and serum alanine aminotransferase (ALT). Liver function test No. 2 refers to the measurement of total bilirubin, direct bilirubin, indirect bilirubin, and alkaline phosphatase.

2. Different measured indicators

Serum AST and ALT in liver function test No. 1 are among the most commonly used markers in liver function evaluation, reflecting the extent of hepatocellular injury. When liver cells are damaged, these enzymes are released into the bloodstream, causing their levels to rise. Total bilirubin in liver function test No. 2 represents the total amount of bilirubin in the blood, direct bilirubin refers to conjugated bilirubin present in bile, and indirect bilirubin refers to unconjugated bilirubin in the blood. These indicators change when there are problems with the liver or biliary system.

3. Different diseases diagnosed

Liver function test No. 1 is commonly used to diagnose liver diseases such as hepatitis and fatty liver. Liver function test No. 2 is typically used to diagnose conditions such as biliary obstruction and cholestasis.

Patients requiring liver function tests should undergo them under the guidance of a qualified physician. In daily life, it's important to maintain healthy habits, exercise appropriately, and strengthen immune function.

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