LFT Report: Normal Range & How to Read It
A liver function test (LFT) measures bilirubin, liver enzymes and proteins in your blood. Values outside the normal range are marked H (high) or L (low).
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What an LFT checks
Bilirubin
A yellow pigment the liver clears from the blood.
Liver enzymes
SGOT (AST), SGPT (ALT), ALP and GGT.
Proteins
Albumin and globulin, made mostly by the liver.
LFT normal range for adults
Labs differ a little. Always compare with the range printed on your report.
| Test | Men | Women | Unit | What it tells you |
|---|---|---|---|---|
| Bilirubin | ||||
| Total bilirubin | 0.3–1.2 | mg/dL | All the bilirubin in your blood. | |
| Direct bilirubin | 0.0–0.3 | mg/dL | Bilirubin the liver has already processed. | |
| Indirect bilirubin | 0.2–0.8 | mg/dL | Bilirubin before the liver processes it. | |
| Liver enzymes | ||||
| SGOT (AST) | 10–40 | U/L | Enzyme found in the liver, heart and muscles. | |
| SGPT (ALT) | 7–56 | U/L | Enzyme found mostly in the liver. | |
| ALP | 44–147 | U/L | Enzyme from the liver and bones. | |
| GGT | Men 8–61 | Women 5–36 | U/L | Enzyme linked to the bile ducts. |
| Proteins | ||||
| Total protein | 6.0–8.3 | g/dL | Albumin and globulin together. | |
| Albumin | 3.5–5.0 | g/dL | Main protein made by the liver. | |
| Globulin | 2.0–3.5 | g/dL | Proteins that include antibodies. | |
| A/G ratio | 1.0–2.5 | Albumin divided by globulin. | ||
Ranges from the NirogGyan biomarker library. Updated .
What an LFT report looks like
The same results in the usual lab layout, and as a NirogGyan Smart Report.
Numbers and ranges in rows
Each value on our report slider
How to read your LFT report
Check your details
Age and sex decide which range applies to you.
Find your result
The Result column shows your value for each test.
Compare with the range
The Range column shows what is normal for that test.
Look for H or L
A flag marks a value outside the range. Your doctor reads what it means.
LFT report questions
What does an LFT check?
It measures substances the liver makes or clears, such as bilirubin, the enzymes SGOT (AST) and SGPT (ALT), ALP, and proteins like albumin.
What is SGPT and SGOT in an LFT?
They are enzymes found mostly in liver cells. The SGPT and SGOT rows in the table above show the usual ranges. Labs differ a little, so compare with your report.
Do I need to fast for an LFT?
Some labs ask you to fast for 8 to 12 hours, especially when other tests are done with it. Follow what your lab tells you when you book.
What does high bilirubin in an LFT mean?
It means there is more bilirubin in your blood than the lab's range. There are many possible reasons, so your doctor reads it with your other LFT values.
Can LFT values change from day to day?
Yes, small changes are common. Hard exercise, some medicines and alcohol can shift enzyme values for a short time.
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