LFT Test: Purpose, Procedure, and Importance

The Liver Function Test (LFT) is a blood test that evaluates liver health by measuring different enzymes, proteins, and substances produced by the liver. It helps detect liver diseases, infections, and overall liver function.

What is the LFT Test?

The LFT Test measures the following components:

• Alanine Aminotransferase (ALT): High levels may indicate liver damage.

• Aspartate Aminotransferase (AST): Elevated levels suggest liver or muscle damage.

• Alkaline Phosphatase (ALP): High ALP levels may indicate bile duct obstruction or liver disease.

• Total and Direct Bilirubin: Increased bilirubin levels may signal jaundice or liver dysfunction.

• Albumin and Total Protein: Low levels suggest liver disease or malnutrition.

Why is the LFT Test Important?

The LFT Test is essential for:

• Detecting liver diseases such as hepatitis, fatty liver, and cirrhosis.

• Monitoring the effects of medications on liver health.

• Evaluating liver function in chronic conditions like diabetes or alcoholism.

• Assessing liver health before surgeries or treatments.

Who Should Get an LFT Test?

Doctors recommend the LFT Test for individuals who:

• Experience jaundice, fatigue, nausea, or abdominal pain.

• Have a history of alcohol consumption or liver disease.

• Are undergoing treatment for hepatitis or other chronic conditions.

• Are taking medications that may impact liver function.

How is the LFT Test Done?

The LFT Test involves:

1. A blood sample drawn from a vein in the arm.

2. The sample is analyzed in a laboratory.

3. Results are usually available within 24 hours.

Preparation for the Test:

• Fasting may be required for 10-12 hours before the test.

• Avoid alcohol and fatty foods before testing.

• Inform your doctor about any medications you are taking.

Understanding LFT Test Results

Normal Liver Function Levels:

• ALT: 7-55 U/L

• AST: 8-48 U/L

• ALP: 40-129 U/L

• Total Bilirubin: 0.1-1.2 mg/dL

• Albumin: 3.5-5.0 g/dL

Abnormal results may indicate liver inflammation, infection, or damage, requiring further evaluation.

Cost of LFT Test in India

The cost of an LFT Test in India varies depending on the healthcare facility. On average, it ranges from ₹500 to ₹1200.

Conclusion

The LFT Test is crucial for monitoring liver health and detecting potential liver diseases early. Regular screening and timely medical intervention can help maintain liver function and overall well-being. If you have symptoms of liver issues, consult your doctor for testing and appropriate treatment.