Mildly raised liver enzymes are one of the most common incidental findings on Indian health checks — and one of the most treatable.
What these enzymes actually are
SGPT and SGOT are enzymes found inside liver cells. You may see them written as ALT (alanine transaminase, the newer name for SGPT) and AST (aspartate transaminase, formerly SGOT). When liver cells are injured or inflamed, these enzymes leak into the bloodstream, so a raised level indicates cell stress rather than measuring how well the liver is working.
ALT is fairly specific to the liver. AST also occurs in heart and skeletal muscle, so an isolated AST rise can come from muscle rather than liver — for example after intense exercise.
Typical ranges
The AST-to-ALT ratio can be informative. A ratio above 2 is classically associated with alcohol-related liver injury, while fatty liver disease more often shows ALT higher than AST. These are patterns, not proof.
Ranges differ by laboratory, sex and assay method — read the range on your own report.
Common reasons for mildly raised enzymes
Herbal and over-the-counter supplements deserve particular mention. "Natural" does not mean harmless to the liver, and several widely sold preparations have been associated with liver injury. Tell your doctor about everything you take, not only prescription medicines.
- Non-alcoholic fatty liver disease — now the most frequent cause worldwide and increasingly common in urban India, closely linked to weight, diabetes and lipid problems
- Alcohol intake
- Medicines and supplements, including paracetamol in high doses, some antibiotics, anti-tubercular drugs, statins and a number of herbal and ayurvedic preparations
- Viral hepatitis A, B, C or E
- Recent intense exercise, which can raise AST via muscle
- Obesity, insulin resistance and metabolic syndrome
What to ask your doctor
- Should this be repeated before further investigation?
- Do I need an ultrasound of the abdomen?
- Should I be screened for hepatitis B and C?
- Could any medicine or supplement I take be responsible?
- Is fatty liver likely, and what would reverse it?
Common questions
Is a slightly high SGPT serious?
A mild isolated rise is common and frequently reversible, often reflecting fatty liver, alcohol or a medication effect. It should not be ignored, though — the usual approach is to repeat the test, look for a cause, and address it. Persistently raised enzymes over months warrant proper evaluation.
Can fatty liver be reversed?
In its early stages, non-alcoholic fatty liver disease is often reversible. Gradual weight loss, reducing refined carbohydrates, sugar and alcohol, and regular physical activity are the mainstays, and liver enzymes commonly improve as those changes take hold. Advanced disease with scarring is a different situation and needs specialist care.
Should I fast before a liver function test?
Fasting is not strictly required for liver enzymes, but many Indian labs run LFTs as part of a package that includes fasting glucose or a lipid profile, so fasting is often requested for the panel as a whole. Follow the instruction your lab gives.
This article is general health information, not medical advice. Reference ranges differ between laboratories — always read the range printed on your own report and discuss results with a qualified doctor.
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