Liver Function Tests (LFTs)
Your liver processes everything you eat, drink, and absorb. Damage often shows up in blood tests before you notice any symptoms. A simple blood test can reveal whether your liver is under strain.
Liver Function Tests measure enzymes and proteins that indicate how well your liver is working. Because the liver has significant reserve capacity, problems often only become apparent through blood testing.
This panel includes:
- • ALT and AST (enzymes released when liver cells are damaged)
- • ALP (alkaline phosphatase - elevated with bile duct problems)
- • GGT (sensitive to alcohol and medication effects)
- • Bilirubin (causes jaundice when elevated)
- • Albumin and total protein (markers of liver synthetic function)
Why patients book liver function tests:
- • Fatigue, nausea, or abdominal discomfort
- • Monitoring medication that may affect the liver (statins, methotrexate, certain antibiotics)
- • Checking for alcohol-related liver changes
- • Following up abnormal results from other tests
- • Routine screening if you have risk factors for liver disease
Mild elevations are common and often temporary. Persistent abnormalities may indicate fatty liver disease, hepatitis, or other conditions requiring further investigation.
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Liver Function Tests (LFTs)
£72.50Common Questions
Q.Do I need to fast?
Fasting is not required, though some doctors prefer morning samples for consistency.
Q.My LFTs were slightly raised - should I worry?
Minor elevations are common and often resolve. Our GP will advise whether repeat testing or further investigation is needed based on the pattern of results.
Q.How often should I test if I take statins?
Guidelines vary, but many doctors recommend LFTs before starting statins and periodically thereafter. Your prescribing doctor can advise on frequency.
