Liver Function Test Why Its Important and When You Should Take It

Your liver plays a critical role in digestion, energy production, toxin removal, and storing essential nutrients. However, liver damage often develops slowly and shows symptoms only when the condition becomes serious. That’s why a liver function test is extremely important for early detection and monitoring of liver health.

What Is a Liver Function Test?

A liver function test (LFT) is a set of blood tests used to measure enzymes, proteins, and bilirubin levels produced by the liver. These values help assess inflammation, infection, fatty liver, alcohol-related damage, or other liver conditions.

Key Markers Checked in a Liver Function Test

A standard LFT panel typically includes:

• ALT (SGPT): Detects liver cell damage

• AST (SGOT): Indicates inflammation or injury

• Bilirubin (Total/Direct/Indirect): Identifies jaundice and bile flow issues

• ALP: Checks bile duct blockage

• GGT: Indicates alcohol or toxin-related liver stress

• Albumin & Total Proteins: Shows liver’s protein production capability

These values combined provide a clear picture of liver health.

When Should You Get a Liver Function Test?

You should consider this test if you experience:

• Yellow skin or eyes (Jaundice)

• Abdominal pain or bloating

• Frequent nausea or vomiting

• Sudden weight loss or fatigue

• Dark urine or pale stool

Some individuals require regular screening:

✔ People with fatty liver
✔ Regular alcohol consumption
✔ Diabetic or high cholesterol patients
✔ Hepatitis B/C carriers
✔ Those with family history of liver disease
✔ Individuals on long-term medication

Why Early Liver Testing Matters

Early screening using a liver function test helps prevent:

• Liver fibrosis

• Cirrhosis

• Liver failure

• Severe metabolic and digestive complications

Early diagnosis ensures timely treatment and better recovery outcomes.

How to Prepare for the Test

• Fasting may be required (follow lab instructions)

• Avoid alcohol for at least 24–48 hours before testing

• Inform the lab about medicines or supplements

Conclusion

A liver function test is a simple yet essential diagnostic step to protect long-term liver health. If you are at risk or noticing symptoms, timely testing can make a significant difference in treatment and prevention.