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Liver Function Test (LFT): normal range & what your result means

The LFT checks how well your liver is working, using enzymes (SGPT/ALT, SGOT/AST, ALP) and products it processes (bilirubin, protein, albumin).

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Typical adult reference range

Measure	Range
ALT / SGPT	7–56 U/L
AST / SGOT	5–40 U/L
ALP	44–147 U/L
Total bilirubin	0.1–1.2 mg/dL
Albumin	3.5–5.0 g/dL

What a HIGH result can mean

High ALT/AST suggests liver cell irritation (fatty liver, hepatitis, alcohol, medicines)
High bilirubin can cause jaundice (yellow skin/eyes)

What a LOW result can mean

Low albumin can reflect long-standing liver disease, malnutrition or kidney loss

Ranges vary by lab. Reference ranges are TYPICAL ADULT values and vary by laboratory, age, sex, pregnancy and the method used. Always read your result against the range printed on YOUR report, and let your doctor interpret it alongside your history.

Frequently asked questions

What do raised SGPT and SGOT mean?

Raised ALT (SGPT) and AST (SGOT) indicate the liver is irritated — common causes are fatty liver, alcohol, viral hepatitis and certain medicines. The pattern and your history guide the cause.

Can fatty liver show on an LFT?

Yes — fatty liver often mildly raises ALT/AST. An ultrasound and lifestyle review usually follow; it is common and often reversible.

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MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.