A Liver Function Test (LFT) is a group of blood tests that assess the health and function of your liver. They measure the levels of specific enzymes and proteins produced by your liver. Abnormal results can indicate liver disease or damage.
LFTs can be used to:
- Detect liver problems: Abnormally high levels of certain enzymes, like AST and ALT, can signal liver injury.
- Evaluate the severity of liver disease: LFT results help doctors understand how much damage the liver has sustained.
- Monitor the progress of liver disease: LFTs are used to track the effectiveness of treatment and monitor changes in liver function.
Some commonly tested enzymes and proteins include:
- Alanine transaminase (ALT): Primarily found in the liver and released into the bloodstream when liver cells are damaged.
- Aspartate transaminase (AST): Found in the liver, heart, and muscles, but elevated levels are indicative of liver damage.
- Alkaline phosphatase (ALP): Primarily found in the liver, bones, and intestines, but elevated levels are often associated with liver or bone disease.
- Gamma-glutamyl transferase (GGT): Primarily found in the liver and biliary system, elevated levels suggest a problem with the bile ducts.
If you have any concerns about your liver health, talk to your doctor. They can explain your LFT results and recommend appropriate follow-up care.
