LFT Test: Importance, Procedure, and Results

The Liver Function Test (LFT) is a group of blood tests that assess the overall health and functioning of the liver. The liver plays a crucial role in metabolism, detoxification, digestion, and protein synthesis. The LFT test helps in diagnosing liver diseases such as hepatitis, liver cirrhosis, fatty liver disease, and other liver-related conditions.

What is an LFT Test?

The Liver Function Test (LFT) measures the levels of different enzymes, proteins, and substances in the blood to determine liver health. The key parameters included in an LFT test are:

• Alanine Aminotransferase (ALT) – Indicates liver damage or inflammation.

• Aspartate Aminotransferase (AST) – Helps assess liver and heart health.

• Alkaline Phosphatase (ALP) – Evaluates bile duct function and liver conditions.

• Total Bilirubin & Direct Bilirubin – Helps diagnose jaundice and liver disorders.

• Albumin & Total Protein – Assesses the liver’s ability to produce essential proteins.

• Gamma-Glutamyl Transferase (GGT) – Detects bile duct diseases and liver damage.

Why is an LFT Test Important?

A LFT test is crucial as it helps in:

• Detecting early-stage liver diseases before they worsen.

• Monitoring liver function in individuals with alcoholism or chronic liver conditions.

• Evaluating the impact of medications or toxins on the liver.

• Diagnosing hepatitis, cirrhosis, jaundice, and liver infections.

• Checking for liver damage due to obesity, diabetes, or viral infections.

Who Should Get an LFT Test?

Doctors recommend a LFT test for individuals who:

• Show symptoms of liver disease, such as fatigue, yellow skin (jaundice), or abdominal pain.

• Have a history of excessive alcohol consumption.

• Are on long-term medications that may affect liver function.

• Have obesity, high cholesterol, or diabetes, which can lead to fatty liver disease.

• Are diagnosed with hepatitis or other liver-related conditions.

How is the LFT Test Done?

The LFT test is a simple blood test that usually does not require fasting. The procedure includes:

1. A healthcare professional draws blood from a vein in the arm.

2. The blood sample is sent to a laboratory for analysis.

3. Results are typically available within 24-48 hours.

In some cases, fasting for 8-12 hours may be necessary for accurate results.

Understanding LFT Test Results

The normal reference range for LFT Test parameters is:

• ALT (Alanine Aminotransferase): 7-56 U/L

• AST (Aspartate Aminotransferase): 10-40 U/L

• ALP (Alkaline Phosphatase): 44-147 U/L

• Total Bilirubin: 0.1-1.2 mg/dL

• Albumin: 3.5-5.0 g/dL

• GGT (Gamma-Glutamyl Transferase): 9-48 U/L

Abnormal levels of these markers may indicate liver disease, infection, bile duct obstruction, or other metabolic issues. Consultation with a doctor is necessary for interpretation and further action.

Cost of LFT Test in India

The LFT test cost in India varies depending on the diagnostic center and location. On average, the price ranges between ₹500 to ₹1500.

Conclusion

The LFT test is essential for evaluating liver function and diagnosing liver diseases. Regular liver function tests help detect conditions early and ensure preventive healthcare. If you experience symptoms of liver problems or have risk factors, consult a doctor and schedule an LFT test today to maintain good liver health.