LFT Test: What Is Liver Function Test, Normal Range & Cost

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LFT (Liver Function Test): What Is It, Normal Range, Cost & When to Get It Done

Have you ever looked at your blood test report and seen terms like SGPT, SGOT, or Bilirubin and had no idea what they mean? You're not alone. Every year, millions of people in India get an LFT done — often without fully understanding what it's checking or why their doctor recommended it.

Whether you're dealing with fatigue, yellowing skin, stomach pain, or your doctor simply asked you to get your "liver profile" checked, this guide will help you understand everything about the Liver Function Test in simple terms.

What Is an LFT (Liver Function Test)?

LFT, short for Liver Function Test, is a group of blood tests that check how well your liver is working. Your liver plays a huge role in digestion, detoxifying your blood, producing proteins, and storing energy. When something goes wrong with your liver, certain enzymes and proteins in your blood change — and an LFT is designed to detect exactly that.

An LFT typically measures:

SGPT (ALT) – Alanine Aminotransferase
SGOT (AST) – Aspartate Aminotransferase
Alkaline Phosphatase (ALP)
Total Bilirubin & Direct Bilirubin
Total Protein & Albumin
Globulin and A/G Ratio

Each of these tells doctors something different about your liver's health, from inflammation to how well it's processing waste.

Why Is an LFT Test Done?

Doctors recommend a Liver Function Test for many reasons, including:

Diagnosing liver diseases like hepatitis, fatty liver, or cirrhosis
Monitoring the effects of alcohol consumption on the liver
Checking side effects of certain medications (especially long-term ones)
Investigating symptoms like jaundice, fatigue, or abdominal pain
Routine health checkups, especially for people above 30
Monitoring existing liver conditions over time

If you drink alcohol regularly, are overweight, take medications long-term, or have a family history of liver disease, your doctor may recommend periodic LFT tests even without symptoms.

Also Read:https://curelohealth.com/blog/fatty-liver-test-symptoms-causes-diagnosis

Symptoms That May Indicate You Need an LFT

You should consider getting an LFT done if you notice:

Yellowing of skin or eyes (jaundice)
Persistent fatigue or weakness
Loss of appetite or nausea
Pain or swelling in the upper right abdomen
Dark-colored urine or pale stools
Unexplained itching of the skin
Swelling in the legs or abdomen

These symptoms don't always mean something serious, but they're worth getting checked, since liver problems are often silent in early stages.

LFT Normal Range: What Do Your Results Mean?

Understanding your LFT normal range helps you make sense of your report before even talking to your doctor. Here's a general reference:

Parameter	Normal Range	What High Values May Indicate
SGPT (ALT)	7–56 U/L	Liver inflammation, fatty liver, hepatitis
SGOT (AST)	5–40 U/L	Liver damage, muscle injury
ALP	44–147 U/L	Bile duct blockage, bone or liver disorders
Total Bilirubin	0.1–1.2 mg/dL	Jaundice, bile duct issues, liver disease
Direct Bilirubin	0–0.3 mg/dL	Liver or bile duct obstruction
Total Protein	6.0–8.3 g/dL	Liver or kidney disorders, malnutrition
Albumin	3.5–5.0 g/dL	Chronic liver disease, malnutrition
A/G Ratio	1.1–2.5	Liver or immune system disorders

Note: These ranges can vary slightly between labs based on the testing method used. Always compare your results with the reference range printed on your own report.

SGPT and SGOT: Why They Matter the Most

Among all LFT parameters, SGPT and SGOT are the ones doctors watch most closely, since they rise quickly when liver cells are damaged or inflamed.

High SGPT is often the first sign of fatty liver or early liver stress, especially in people with diabetes or obesity.
High SGOT combined with high SGPT often points to alcohol-related liver damage or viral hepatitis.
A high SGOT-to-SGPT ratio can sometimes indicate alcoholic liver disease specifically.

If your SGPT or SGOT levels are mildly elevated, it doesn't always mean serious liver disease — but it shouldn't be ignored either, especially if it stays high on repeat testing.

Also Read:https://curelohealth.com/blog/sgpt-normal-range-and-high-levels

How Is the LFT Test Done?

An LFT is a simple blood test. A small sample of blood is drawn, usually from a vein in your arm, and sent to the lab for analysis. Here's what to expect:

Fasting required: Most labs recommend 8–10 hours of fasting before the test for accurate results.
Time taken: The blood draw itself takes less than 5 minutes.
Report time: Results are usually available within 24 hours.

You don't need to stop any regular medication before the test unless your doctor specifically advises it.

LFT Test Cost

The cost of an LFT test in India generally ranges from ₹300 to ₹800, depending on the lab, city, and whether it's a basic panel or a comprehensive liver profile. Prices can also vary if bundled with other tests like a full body checkup.

With Curelo, you can compare LFT test prices across multiple NABL-accredited labs in your city and choose the one that fits your budget, without visiting multiple websites or labs individually.

How to Prepare for an LFT Test

To get the most accurate results:

Fast for 8–10 hours before the test (water is allowed)
Avoid alcohol for at least 24 hours before testing
Inform your doctor about any medications or supplements you're taking
Avoid heavy, oily meals the night before

When Should You Repeat an LFT?

If your first LFT shows abnormal results, your doctor may recommend repeating the test after a few weeks to see if the levels are improving, worsening, or stable. This is especially common for people managing fatty liver, hepatitis, or medication-related liver stress.

Frequently Asked Questions (FAQs)

What is LFT test full form?

LFT stands for Liver Function Test, a panel of blood tests that assess how well your liver is functioning.

LFT test kab karana chahiye?

Agar aapko jaundice, thakaan, pet dard, ya skin par peela pan dikhe, toh LFT test karana chahiye. Regular alcohol consumption ya medication use karne walon ko bhi periodic LFT karani chahiye.

Is fasting required for an LFT test?

Yes, most labs recommend 8–10 hours of fasting before the test for accurate results.

Can normal LFT results rule out liver disease completely?

Not always. Some liver conditions, especially in early stages, may not show up in a standard LFT. Your doctor may recommend additional tests like an ultrasound or viral markers if symptoms persist despite normal LFT results.

What foods should I avoid before an LFT test?

Avoid alcohol, oily or fried foods, and heavy meals for at least 24 hours before the test to get accurate readings.

Final Thoughts

Your liver works silently every day to keep your body detoxified and functioning well — which is exactly why liver problems often go unnoticed until they show up in a blood test. Getting a Liver Function Test done periodically, especially if you have risk factors like alcohol use, obesity, or diabetes, can help catch problems early when they're most treatable.

If you're experiencing symptoms or simply want to stay on top of your health, you can book an LFT test from the comfort of your home with Curelo — compare prices across trusted labs and get your sample collected at a time that works for you.