Liver Function Test (LFT)

The Liver Function Test (LFT) is a group of blood tests that measure different enzymes, proteins, and substances produced or processed by the liver. This test helps evaluate the liver’s health and detect liver damage or disease.

🧫 Common Components Tested:

• ALT (Alanine Aminotransferase): Enzyme elevated in liver damage

• AST (Aspartate Aminotransferase): Enzyme indicating liver or muscle damage

• ALP (Alkaline Phosphatase): Enzyme elevated in bile duct obstruction or bone disease

• Total Bilirubin: Measures bilirubin level, a waste product from red blood cells

• Direct Bilirubin: Conjugated form processed by liver

• Albumin: Major blood protein made by the liver

• Total Protein: Measures overall protein in blood

• GGT (Gamma-Glutamyl Transferase): Enzyme elevated in bile duct and liver diseases

• To assess liver health and function

• To diagnose liver diseases such as hepatitis, cirrhosis, or fatty liver

• To monitor effects of medications on the liver

• To investigate symptoms like jaundice, abdominal pain, or fatigue

Sample Required:
A blood sample

Fasting Required:

Fasting for 8–12 hours is often recommended for more accurate results.

• Elevated ALT and AST: May indicate liver inflammation or damage

• High ALP and GGT: Can suggest bile duct problems or liver disease

• Abnormal Bilirubin levels: Indicate jaundice or liver dysfunction

• Low Albumin: May suggest chronic liver disease or malnutrition