What is a Liver Function Test? 

Why are Liver Tests Done?, Types of Liver Function Tests and How to Prepare for a Liver Function Test?

Liver function testing is a group of blood tests that evaluate the health and functionality of the liver.  Understanding the process and results of liver function.

Why are Liver Tests Done? 

Liver tests are done to check the health and function of the liver. They measure levels of enzymes, proteins, and other substances in the blood.

Types of Liver Function Tests:

Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) - These enzymes are found in liver cells and are released into the bloodstream when the liver is damaged.


Alkaline phosphatase (ALP): 

ALP enzyme is found in liver cells and bone cells. Elevated levels of ALP can indicate liver or bone disease.

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Gamma-glutamyl transferase (GGT):

GGT enzyme is found in liver cells and bile ducts. Elevated levels of GGT can indicate liver or bile duct disease.


Bilirubin is a waste product produced when red blood cells break down. Elevated levels of bilirubin can indicate liver disease or a problem with red blood cell breakdown.


This type of protein is produced by the liver. Low levels of albumin indicate liver disease or malnutrition.

Prothrombin time (PT):

PT measures the duration it takes for blood to clot. An abnormal PT can indicate liver disease. 


How to Prepare for a Liver Function Test? 

Before the procedure, the patient will be explained what is a liver function test. And he/she may be required to fast for several hours before the test.

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The patient should inform their healthcare provider of any medications they are taking, as some medications can affect liver function test results. 

Contact Us Magnus Gastro & Liver Clinic, Thirukkural Medical Centre, 62, Rajiv Gandhi IT Expy, Uthandi, Egattur, Tamil Nadu 603103. +91 82967 91847 support@drmagnusjayaraj.com