An LFT, or Liver Function Test, is a blood test that can help detect liver problems. However, it doesn't directly show liver disease.
LFTs measure the levels of certain enzymes and proteins in your blood that are produced by the liver. Abnormal levels of these substances can indicate that your liver is not functioning properly.
For example, elevated levels of AST and ALT, two liver enzymes, can indicate liver damage. However, these elevations can also be caused by other factors, such as muscle injury or certain medications.
While LFTs can be helpful in detecting liver problems, they are not a definitive diagnosis for liver disease. Further tests and examinations are often necessary to confirm a diagnosis.
What LFTs Can Indicate
- Liver damage: Elevated levels of liver enzymes like AST and ALT can indicate damage to the liver cells.
- Inflammation of the liver: Increased levels of bilirubin and alkaline phosphatase can suggest inflammation of the liver.
- Blockage in the bile ducts: Elevated levels of bilirubin and alkaline phosphatase can also indicate a blockage in the bile ducts.
Additional Information
It's important to note that LFTs are just one tool used to assess liver health. Your doctor will consider your LFT results alongside your medical history, symptoms, and other tests to determine the cause of any abnormalities.
