Elevated liver enzymes

A liver function test does two different jobs at once, and the confusion this produces accounts for most of the anxiety around it.

Some of the values on the panel are enzymes. SGPT — also called ALT — and SGOT, also called AST, sit inside liver cells. When those cells are irritated, some of the enzyme leaks into the blood and the level rises. A raised enzyme is a signal that liver cells are under stress. It says nothing about how well the liver is doing its work.

The other values measure function. Albumin, bilirubin and, where it is checked, the prothrombin time or INR reflect what the liver is actually producing and clearing. In the great majority of people with a mildly raised SGPT, all of these are entirely normal. That combination — a raised enzyme with preserved function — is the most common finding in Indian practice, and it is a reassuring one.

The panel also includes ALP and GGT, which behave differently again, rising when bile flow is obstructed rather than when liver cells are injured. ALP has an Indian wrinkle: it also comes from bone, so it is raised in growing children, in pregnancy, in bone disease and in vitamin D deficiency, which is widespread here. A raised ALP with a normal GGT often points away from the liver altogether.

Bilirubin deserves its own note. An isolated rise in unconjugated bilirubin with normal enzymes is usually Gilbert's syndrome — an inherited variation carried by a substantial minority, harmless, and more pronounced after fasting, illness or a poor night's sleep. It is one of the most over-investigated findings on Indian reports.

As for why enzymes rise, the Indian list is led decisively by metabolic fatty liver, which affects something between a fifth and a third of urban adults. Alcohol is the next major cause, and the two frequently coexist. Medicines and supplements are a large, under-recognised group: anti-tubercular treatment, which a great many Indians take at some point, certain antibiotics, methotrexate, some statins and non-steroidal painkillers, paracetamol in overdose, and — documented repeatedly in Indian drug-induced liver injury registries — herbal, ayurvedic and bodybuilding supplements. Acute viral hepatitis A and E remain common here, usually waterborne and self-limiting. Chronic hepatitis B and C raise enzymes quietly for years. Less commonly, thyroid disease, coeliac disease, autoimmune hepatitis, iron overload and, in younger patients, Wilson's disease enter the picture.

And sometimes it is not the liver at all. SGOT is present in muscle and red blood cells, so a heavy gym session, a muscle injury or haemolysis can raise it.

ⓘThis information is educational and not a diagnosis.

Raised liver enzymes are usually silent. The number turns up on a routine health check, an insurance screening or a panel ordered for something unrelated, in someone who feels entirely well.

Where there is anything to feel, it tends to be vague: a dull heaviness under the right ribs, tiredness that sleep does not resolve, nausea or reduced appetite after rich or fried food, occasionally itching without a rash. None is specific to the liver, and their absence provides no reassurance.

What is worth recognising is the context around the result, because context directs the investigation.

Recent history matters most. A new medicine started in the past three months, anti-tubercular treatment, a herbal or ayurvedic preparation, a gym supplement, a recent viral illness, a period of heavier drinking, an unaccustomed heavy workout before the test, or rapid weight loss. Each produces a different pattern and a different next step.

Metabolic context. A waist above 90 cm in men or 80 cm in women, a family history of type 2 diabetes, PCOS, raised triglycerides, a rising HbA1c, or fatty liver on an earlier scan. Together these make metabolic fatty liver much the most probable explanation. It is also why a raised enzyme so often turns up in someone who had come in about something else entirely — tiredness that sleep does not resolve, or a weight that has not moved despite months of genuine effort.

The pattern within the report. SGPT higher than SGOT is typical of metabolic fatty liver. SGOT more than twice SGPT raises the question of alcohol. A predominant rise in ALP and GGT points toward bile flow rather than liver cells. Enzymes in the hundreds or thousands suggest acute injury — a virus, a medicine reaction, a blocked bile duct — rather than the low-grade picture a value of 60 or 70 describes.

The signs listed below sit in a different category entirely. They suggest the liver's function is affected rather than simply its enzyme level, and they warrant being seen the same day rather than at the next convenient appointment.

Investigating a raised enzyme answers four questions in order: is it real, is function affected, why has it happened, and has any scarring begun.

Is it real? A single value is a snapshot. Repeating the test after four to eight weeks — with no alcohol and no heavy exercise for a few days beforehand — resolves a surprising proportion of cases without further work. Check that the comparison is fair: reference ranges and assay methods differ between laboratories, so 52 at one lab and 46 at another may represent no change at all.

Is function affected? The same panel answers it: albumin, bilirubin and, where indicated, the INR. Normal values here alongside a mildly raised enzyme take the situation firmly out of the urgent category and into the investigative one.

Why has it happened? In Indian practice the first pass is an ultrasound of the abdomen, hepatitis B surface antigen and hepatitis C antibody, an HbA1c and a fasting lipid profile, with a careful review of every medicine, supplement and herbal product being taken — including those taken for the liver. Where SGOT is raised out of proportion to SGPT, a CPK distinguishes muscle from liver. Thyroid function and iron studies are commonly added. If the enzyme remains raised, a second tier follows: autoimmune markers, coeliac screening, and copper studies in a younger patient.

Has scarring begun? This determines long-term outlook, and it is the question most often skipped. FIB-4 is calculated from age, platelet count and the two enzymes — tests most people have already had, at no extra cost. Transient elastography measures liver stiffness directly and is available at most large Indian centres, usually as a paid add-on rather than within a standard package. A biopsy is rarely needed in routine practice.

On cost and sequence. Ordering everything at once is expensive and usually unnecessary. A repeat panel with an ultrasound and viral screening, read alongside HbA1c and lipids, resolves most cases at modest cost. The specialised tests earn their place when that first pass leaves the picture unexplained.

There is no treatment for a number. What is treated is the cause, and the enzyme is then watched to see whether it is working. What follows is general explanation; decisions about your own medicines belong with your doctor, and nothing here is a reason to start or stop anything on your own.

Where metabolic fatty liver is the cause, which it usually is, the evidence points one way. Sustained reduction of around 5% of body weight clears fat from the liver in most people; 7–10% improves inflammation and typically settles the enzymes. Reducing refined carbohydrate and added fructose — sweets, biscuits, packaged juices, sugary drinks — matters more in Indian households than removing any staple. Resistance training twice a week plus regular aerobic activity improves liver fat even where weight does not change, which matters for the lean fatty liver common here. Rapid crash loss can worsen inflammation and is usually regained, so gradual and sustained is what works.

Where a medicine or supplement is implicated, the answer is a review with the prescribing doctor. Some medicines are continued with monitoring because the benefit outweighs a mild enzyme rise; others are changed. Anti-tubercular treatment has established monitoring protocols and is managed rather than abandoned, because stopping it carries consequences of its own. Herbal, ayurvedic and bodybuilding supplements are worth disclosing in full — including anything taken for the liver.

Where a virus is found, hepatitis B and C both have effective treatments, and hepatitis C responds to a course of tablets that clears the virus in the great majority of people. Acute hepatitis A or E is usually managed supportively and settles over weeks.

Alcohol. Where enzymes are raised for any reason, alcohol adds a second injury to a liver already under load. While the picture is being sorted out, the safest amount is none.

What does not help. Over-the-counter liver tonics, cleanse regimens and enzyme-lowering supplements have no evidence behind them, and some cause liver injury themselves.

Follow-up. A repeat panel at eight to twelve weeks after changes begin, with metabolic markers alongside. If the enzyme settles, annual review is usually enough. If it stays raised beyond a few months despite genuine effort, the useful response is to look further rather than repeat the same approach with more determination.

Once the distinction between an enzyme and a function marker is clear, a liver report stops being a source of dread and becomes something you can read. SGPT tells you cells are irritated. Albumin and bilirubin tell you the organ is working. ALP and GGT tell you about bile flow. Together they describe a situation rather than a verdict.

Because metabolic fatty liver is behind most raised enzymes seen in Indian clinics, the Learning Session below — what fatty liver is, how to read your own results, and what a realistic first three months looks like — covers the ground most people with this finding need.

If you have a report in hand and want it read against your own history, your medicines and your weight trend, that is a conversation for a consultation rather than an article.