What is the most important test in an LFT panel?

ALT (SGPT) is considered the most liver-specific marker. It's the first to rise when liver cells are damaged and the most reliable indicator of liver cell injury. However, doctors always look at the full panel together, not just one value.

Can a fatty liver be detected through LFT alone?

Not conclusively. LFT may show mildly elevated ALT and AST, which are consistent with fatty liver — but an ultrasound is needed to confirm the diagnosis. Many people with fatty liver have completely normal LFTs in early stages.

My SGPT is slightly high but I feel fine. Should I worry?

Mildly elevated SGPT with no symptoms is common and often related to lifestyle factors like diet, alcohol, or being overweight. It warrants a conversation with your doctor and possibly a repeat test after lifestyle changes — not immediate panic.

How long does it take for LFT values to normalise after stopping alcohol?

GGT typically starts falling within 2–4 weeks of stopping alcohol. ALT and AST may take 4–8 weeks. Complete normalisation depends on how much damage was done and how long the drinking continued.

Can medicines cause abnormal LFT results?

Yes. Many common medications — including paracetamol (in high doses), certain antibiotics, TB drugs, cholesterol medications (statins), and even some herbal supplements — can elevate liver enzymes. Always mention all medications and supplements to your doctor when discussing your LFT.

Liver Function Test Normal Range: What Your LFT Report Is Telling You

You got a health check-up done. The report comes back and somewhere in the middle you see a section labelled LFT or Liver Function Test. There are values like SGPT, SGOT, Bilirubin, Alkaline Phosphatase — and a couple of them have a small H next to them.

Should you be worried? What do these numbers even mean?

Your liver is one of the hardest-working organs in your body. It filters toxins, produces bile for digestion, metabolises medicines, and performs over 500 functions daily. When something is off, your liver function test is often the first place it shows up.

This guide explains every key value in your LFT report in simple language — with liver function test normal ranges used commonly across Indian labs — so you can understand your report clearly before your next doctor visit.

Not sure how to read your report at all? Start with our guide on How to Understand Lab Test Results Online first.

What Is a Liver Function Test (LFT)?

A Liver Function Test — also called LFT or Liver Panel — is a group of blood tests that check how well your liver is working. It is not a single test but a battery of 6–8 tests done together, each measuring something different about liver health.

Doctors order an LFT when:

You have symptoms like yellowing of skin or eyes (jaundice), fatigue, or abdominal pain
You are on long-term medications that can affect the liver (certain antibiotics, TB drugs, statins)
You drink alcohol regularly
You have a condition like fatty liver, hepatitis, or diabetes
As part of a routine annual health check-up

In India, LFT is commonly included in full body check-up packages offered by labs like Thyrocare, SRL, Dr. B Lal, and Agilus.

LFT Normal Range — Complete Reference Table

Test	Normal Range	Unit
ALT (SGPT)	Men: up to 56, Women: up to 40	U/L
AST (SGOT)	Men: up to 40, Women: up to 32	U/L
Alkaline Phosphatase (ALP)	44–147	U/L
GGT (Gamma-GT)	Men: 8–61, Women: 5–36	U/L
Bilirubin (Total)	0.1–1.2	mg/dL
Bilirubin (Direct)	0.0–0.3	mg/dL
Bilirubin (Indirect)	0.2–0.9	mg/dL
Serum Albumin	3.5–5.5	g/dL
Total Protein	6.0–8.3	g/dL

Note: Ranges may vary slightly depending on the lab, equipment used, and the patient's age and sex. Always refer to the reference range printed on your individual report.

Understanding Each LFT Value — In Plain Language

ALT (SGPT) — The Most Important Liver Marker

ALT, also called SGPT in Indian lab reports, is the most liver-specific enzyme in this panel. It is produced almost exclusively in liver cells.

When liver cells are damaged or inflamed, ALT leaks into the bloodstream — and your blood test picks it up.

High ALT means: liver cells are under stress or being damaged. Common causes include fatty liver disease (extremely prevalent in urban India), viral hepatitis (Hepatitis B and C), alcohol consumption, or certain medications including TB drugs and painkillers.

Mildly elevated ALT (56–100 U/L): often seen in fatty liver or after a heavy meal with alcohol. Usually reversible with lifestyle changes.

Significantly elevated ALT (above 200–300 U/L): suggests more serious liver injury — hepatitis, toxicity, or liver disease. Needs prompt medical evaluation.

AST (SGOT) — Liver and Beyond

AST, or SGOT, is found not just in the liver but also in the heart, muscles, and kidneys. So a high AST alone does not always mean liver trouble.

Doctors look at the AST:ALT ratio to interpret results:

Ratio close to 1 (both elevated equally) → likely viral hepatitis or fatty liver
Ratio above 2:1 (AST much higher than ALT) → often points to alcohol-related liver disease
AST high but ALT normal → could be a muscle or heart issue, not liver

ALP — The Bile Duct Signal

Alkaline Phosphatase (ALP) is elevated when there's a problem with the bile ducts — the channels that carry bile from the liver to the intestine. It can also be elevated in bone disorders.

In India, a common cause of mildly elevated ALP is Vitamin D deficiency, which is widespread. Always check your Vitamin D levels alongside ALP.

High ALP + high Bilirubin → often suggests bile duct blockage or liver disease High ALP with normal liver tests → could point to a bone issue

GGT — The Alcohol and Bile Marker

GGT is very sensitive to alcohol consumption. Even moderate, regular drinking can elevate GGT — often before any other liver test shows a change.

It is also elevated in fatty liver, bile duct problems, and with certain medications.

If your GGT is elevated but other liver markers are normal, your doctor may ask about your alcohol intake or medication history.

Bilirubin — The Yellowing Indicator

Bilirubin is a yellow pigment produced when old red blood cells break down. The liver processes this bilirubin and excretes it in bile.

When bilirubin builds up in the blood — because the liver isn't processing it efficiently, or because the bile duct is blocked — it causes jaundice: yellowing of the skin and whites of the eyes.

High Total Bilirubin:

High Indirect (Unconjugated) Bilirubin → blood disorders, like haemolysis or certain genetic conditions
High Direct (Conjugated) Bilirubin → liver disease or bile duct blockage

Jaundice from bilirubin is clearly visible when levels exceed 2.5–3 mg/dL.

Albumin and Total Protein — The Liver's Manufacturing Output

Serum Albumin and Total Protein measure the liver's ability to produce proteins — one of its key functions.

Low Albumin is a sign of chronic liver disease (not acute). When the liver has been damaged over a long period — cirrhosis, chronic hepatitis — its ability to manufacture albumin declines.

Low albumin can also occur due to malnutrition — relevant in India where protein intake in many households is below recommended levels.

What High LFT Values Mean — Common Indian Scenarios

Fatty Liver Disease

This is the most common reason for mildly elevated ALT and AST in urban India today. A diet high in refined carbohydrates, maida, sugar, and fried food — combined with low physical activity — leads to fat accumulation in the liver.

Fatty liver often shows no symptoms but quietly progresses if ignored. The good news: it is largely reversible with diet and exercise in early stages.

Hepatitis B and C

India has a significant burden of Hepatitis B — transmitted through infected blood, contaminated needles, or at birth. Many people carry the virus without symptoms for years while liver damage silently progresses.

TB Medications (Anti-TB Drugs)

First-line TB drugs — particularly Isoniazid and Rifampicin — are known to cause drug-induced liver injury. Patients on TB treatment in India are routinely monitored with LFTs every month for this reason.

Alcohol

Regular alcohol consumption elevates GGT first, followed by AST and ALT. A classic pattern of AST:ALT ratio greater than 2 with elevated GGT strongly suggests alcohol-related liver disease.

What Low LFT Values Mean

Low Albumin: chronic liver disease, malnutrition, or kidney disease causing protein loss
Low ALP: rare — can indicate hypothyroidism, zinc deficiency, or pernicious anaemia
Low Total Protein: poor dietary protein intake, malabsorption, or liver/kidney disease

Real-Life Example: Amit's Annual Health Check-Up

Amit, a 38-year-old marketing manager from Delhi, got his annual check-up done. His LFT showed:

ALT (SGPT): 78 U/L (H — above the 56 U/L upper limit)
GGT: 72 U/L (H)
All other values: Normal

He was confused and anxious. He uploaded his report to Bharat Swasth, which explained that mildly elevated ALT combined with elevated GGT — in a person who drinks socially 2–3 times a week and has a desk job — is a pattern commonly associated with early fatty liver or alcohol-related liver stress.

No jaundice, no severely elevated values, no alarming pattern. But a clear signal to take his liver seriously before it progressed.

His doctor ordered an ultrasound, which confirmed mild fatty liver. Amit reduced alcohol, cut down on fried food, started walking 30 minutes daily — and his ALT was back to normal in six months.

Common Mistakes to Avoid

Panicking over mildly elevated ALT. A value of 60–70 U/L with no symptoms is usually not an emergency — but it is a cue to make lifestyle changes.
Ignoring elevated GGT because "I only drink socially." Even moderate regular alcohol is enough to elevate GGT over time.
Not getting Hepatitis B tested. Many Indians with chronic Hepatitis B don't know they have it. An LFT abnormality is a reason to screen.
Assuming one normal LFT means your liver is fine forever. LFTs are a snapshot in time. Annual monitoring matters, especially if you're on long-term medications or drink regularly.

Still Confused About Your LFT Report?

Upload your liver function test report on Bharat Swasth and get an instant plain-language explanation of every value — what's elevated, what it likely means, and what questions to ask your doctor.

Available on: Web · WhatsApp · Android · iOS

Analyse your LFT report free → bharatswasth.com or WhatsApp your report at wa.me/917014313919.

Your Liver Is Talking — Are You Listening?

Your LFT report is one of the clearest windows into your liver's health. The numbers may look technical, but the message is usually straightforward once you know what to look for.

Look up any specific value — ALT, AST, Bilirubin, Albumin — all explained in plain language with Indian reference ranges.

And if you'd like your full report interpreted in one go, Bharat Swasth does exactly that — instantly, privately, and for free.

Take your liver seriously. It's working hard for you every single day.

Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for diagnosis and treatment.