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Doctor's Assessment Included

Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.

Liver

Liver Function Test (LFT)

A liver function test is particularly important for older adults, as liver function may gradually decline with age. The use of multiple medications, age-related metabolic changes, and reduced regenerative capacity make comprehensive liver screening a valuable part of healthy ageing.

What It Measures

A liver function test measures a combination of enzymes, proteins, and substances produced or processed by the liver. Key components typically include ALT and AST (liver enzymes indicating cell damage), GGT and alkaline phosphatase (bile duct markers), bilirubin (a waste product processed by the liver), and albumin (a protein produced by the liver).

By evaluating these markers together, healthcare providers can distinguish between different types of liver problems, such as liver cell damage, bile duct obstruction, or impaired liver synthetic function.

Why It Matters

The liver performs over 500 vital functions, including detoxification, protein synthesis, and bile production. A comprehensive liver function test provides a holistic assessment that individual markers alone cannot offer.

Early detection of liver dysfunction through routine testing allows for timely intervention, which is particularly important because liver disease often progresses silently without noticeable symptoms until significant damage has occurred.

When to Test

Liver function testing is recommended as part of routine health screening, especially for individuals with risk factors such as regular alcohol consumption, obesity, diabetes, or a family history of liver disease.

It may also be ordered when taking medications that can affect the liver, when symptoms of liver disease are present, or to monitor the progression of known liver conditions and the effectiveness of treatment.

Symptoms

Low Levels

Individual markers within the panel may be low for different reasons. Low albumin may indicate impaired liver synthetic function or malnutrition. Low bilirubin levels are generally not a clinical concern. Consult your healthcare provider for interpretation of your specific results.

High Levels

Fatigue and persistent tiredness
Jaundice (yellowing of skin or eyes)
Abdominal pain or swelling, particularly on the right side
Dark urine or pale stools
Nausea, loss of appetite, or unexplained weight loss

Recommendations

Male

If Low

Normal liver function test results indicate healthy liver activity. Maintain a balanced diet and moderate alcohol consumption.

If High

Abnormal liver function test results may indicate liver damage or disease. Consult your healthcare provider for comprehensive evaluation and follow-up.

Female

If Low

Normal liver function test results indicate healthy liver activity. Maintain a balanced diet and moderate alcohol consumption.

If High

Abnormal liver function test results may indicate liver damage or disease. Consult your healthcare provider for comprehensive evaluation and follow-up.

Lifestyle Tips

Limit alcohol consumption to reduce strain on the liver. Maintain a healthy weight through balanced nutrition and regular physical activity, as non-alcoholic fatty liver disease is one of the most common liver conditions.

Review all medications and supplements with your healthcare provider, as many substances are processed by the liver. Include liver-supportive foods such as leafy greens, cruciferous vegetables, and foods rich in antioxidants. Stay well hydrated and avoid unnecessary exposure to environmental toxins.

Frequently Asked Questions

What markers are included in a liver function test?
A comprehensive liver function test typically includes ALT, AST, GGT, alkaline phosphatase, bilirubin (total and direct), albumin, and total protein. The exact panel may vary depending on the laboratory and clinical context.
Can liver function test results be temporarily abnormal?
Yes, certain factors such as recent intense exercise, alcohol consumption, medications, or even a recent meal can temporarily affect results. Your healthcare provider will consider these factors when interpreting your panel.
How often should I have a liver function test?
For routine screening, annual testing may be sufficient. If you have known liver conditions, take hepatotoxic medications, or have significant risk factors, more frequent monitoring may be recommended by your healthcare provider.