Checking your liver function is an important step in understanding how well your liver is working. Simple blood and imaging tests can give valuable insights into its health, even before symptoms appear. Liver function tests (LFTs) give an indication of how well your liver is functioning by measuring the levels of certain proteins and enzymes circulating in your blood. These include:
- Bilirubin
- Albumin
- AST (aspartate aminotransferase)
- ALT (alanine aminotransferase)
- ALP (alkaline phosphatase)
- GGT (gamma-glutamyltransferase)
Abnormal LFTs may indicate liver problems, although early disease can be symptom-free and some abnormalities may occur without significant damage. Additional tests may include clotting checks, blood tests for viral or autoimmune causes and imaging (ultrasound, CT or MRI scans) to evaluate liver structure and detect fatty liver, scarring, bile duct obstruction or tumours.