Blood Test · Liver Health

Liver Function Test in Singapore

Nurse drawing a blood sample from a male patient's arm for a liver function test at a Singapore clinic
  • Usually No Fasting
  • ALT, AST & GGT
  • Fatty Liver Check
  • Near MRT Stations

A liver function test shows how well your liver is working and whether liver cells are being damaged. It covers ALT, AST, ALP, GGT and bilirubin, with protein markers in the fuller panels. Liver disease is usually silent early on, and fatty liver is now common in Singapore.

Test Name Liver function test — LFT (also called a liver panel or liver enzymes test)
Sample Single blood draw — usually no fasting, any time of day
Measures Bilirubin, ALP, ALT (SGPT), AST (SGOT), gamma GT — plus protein, albumin and globulin in fuller panels
Price From $30.52 NETT · consultation from $49.05
Turnaround Results ready in 3 to 5 days, sent to you securely by email. WhatsApp 8095 3275
Where
Jurong (Dr Joel) — CPF Jurong Building, Jurong East MRT
Tanjong Pagar — Anson House, Tanjong Pagar MRT
Orchard — Camden Medical Centre, Orchard MRT
Novena — Royal Square Medical Centre, Novena MRT
At Home Prefer not to travel? A nurse can come to you for the blood draw
Book Your Appointment Today

Medically Reviewed By: Dr Joel Foo MBBS (Singapore), MRCS (Ed), DWD (CAW), GDFM Men's Health Doctor & Family Physician

Last updated: Aug 01, 2026

What Is a Liver Function Test?

Your liver does several hundred jobs at once — filtering toxins from the blood, producing bile to digest fat, storing energy, making the proteins that keep fluid in your blood vessels, and manufacturing the factors that allow blood to clot. A liver function test, the panel your report may label an LFT, liver panel or liver enzymes test, checks how that work is going. It is a group of measurements taken from a single blood draw.

The name is slightly misleading. Most of what the panel measures are not functions but enzymes that leak out of liver cells when those cells are injured. So a raised ALT or AST tells you the liver is under stress; it does not, by itself, tell you why, or how much lasting damage has been done. Only a few items on the panel — albumin and bilirubin in particular — genuinely reflect how well the liver is performing its work.

Why This Matters in Singapore

Liver disease here is driven by three things in particular. Fatty liver disease has become common, affecting roughly one in three adults in Singapore — and more again among people who are overweight or living with type 2 diabetes, as set out in a review in the Singapore Medical Journal. Hepatitis B remains significant, with an estimated 2% to 4% of Singapore residents carrying the virus — many without knowing. And liver cancer is among the more common cancers affecting men here, usually developing on a background of long-standing liver damage.

What links them is that the liver is quiet. It has considerable functional reserve and no pain fibres inside it, so damage can accumulate for years without producing a single symptom. By the time jaundice or swelling appears, the disease is usually well established. A blood test is how it is normally found.

You may also see fatty liver disease referred to as MASLD (metabolic dysfunction-associated steatotic liver disease) — international liver societies agreed this terminology in 2023 to replace the older term NAFLD, and reports are gradually adopting it. For the vast majority of people the two describe the same condition; the newer definition simply also requires at least one metabolic feature, such as excess weight, raised blood sugar, raised blood pressure or an abnormal cholesterol profile.

What Does a Liver Function Test Include?

A liver panel is not one test but a group. Which markers are included depends on the panel you choose — the basic panel covers the enzymes and bilirubin, while the fuller panels add the proteins the liver manufactures and, at the top level, screening for hepatitis and a liver cancer marker.

The core enzymes

  • ALT (alanine aminotransferase, also written SGPT) — an enzyme found mainly inside liver cells. It leaks into the blood when those cells are injured, making it the most liver-specific marker on the panel.
  • AST (aspartate aminotransferase, also written SGOT) — a similar injury marker, but also present in muscle and heart tissue, so it can rise after intense exercise or a muscle injury without any liver problem. The ratio between AST and ALT is often more informative than either alone.
  • ALP (alkaline phosphatase) — comes from the bile ducts and from bone. A rise points towards bile flow being obstructed rather than liver cells being damaged.
  • Gamma GT (GGT) — another bile duct enzyme, and the one most sensitive to alcohol. Read alongside ALP, it helps separate a liver or bile duct cause from a bone cause.
  • Total bilirubin — the yellow pigment from the breakdown of old red blood cells, which the liver processes and clears. When it builds up, it causes the yellowing of the skin and eyes known as jaundice.

What the fuller panels add

  • Total protein, albumin, globulin and the A/G ratio — these reflect the liver's manufacturing capacity rather than cell injury. Albumin in particular falls when the liver has been struggling for a sustained period, so it says more about longer-term function than the enzymes do.
  • LDH (lactate dehydrogenase) — a general marker of tissue turnover, included in the most complete panel.
  • Hepatitis B surface antigen and antibody, and hepatitis A total IgG — these check whether you currently carry hepatitis B, whether you are immune to it, and whether you have immunity to hepatitis A. Relevant in Singapore given the local carrier rate, and useful for deciding whether hepatitis B vaccination is appropriate.
  • Alpha-fetoprotein (AFP) — a blood marker used alongside imaging in the surveillance of liver cancer in people at higher risk, such as those with cirrhosis or chronic hepatitis B.

WhatsApp us if you are unsure which panel fits your situation and our team will advise before you book.

Who Should Have a Liver Function Test?

A liver panel is part of most general health screenings, but it is worth going out of your way for if any of the following apply:

  • Excess weight, especially around the middle — the single biggest driver of fatty liver disease in Singapore. If you are working on this, see our approach to medical weight loss.
  • Diabetes, pre-diabetes or insulin resistance — fatty liver and disordered blood sugar travel together, each making the other worse. A liver panel and an HbA1c test are commonly done at the same visit.
  • High cholesterol or triglycerides, or metabolic syndrome — the same metabolic picture that drives fat into the liver.
  • Regular alcohol intake — the liver processes alcohol, and sustained intake causes cumulative damage long before symptoms appear.
  • Hepatitis B or C, or a family history of it — chronic viral hepatitis is a leading cause of cirrhosis and liver cancer in Singapore, and carriers are frequently unaware.
  • Family history of liver disease or liver cancer — both raise your own risk and may justify earlier or more regular checks.
  • Long-term medications or supplements — several prescription medicines require periodic liver monitoring, and some over-the-counter painkillers, bodybuilding supplements and traditional or herbal preparations can injure the liver.
  • Symptoms that could be liver-related — persistent tiredness, discomfort under the right ribs, nausea, or any yellowing of the skin or eyes.

If none of these apply and you simply want a baseline, a liver panel is included in most of our broader health screening packages, which is usually the more economical route. It is also commonly checked alongside kidney function, since both organs are assessed together in a general screen.

Doctor examining a male patient's abdomen during a liver assessment at a Singapore clinic

Signs Your Liver May Not Be Working Well

Early liver disease has no symptoms. That is not a reason to ignore symptoms when they appear, but it is a reason not to rely on them — by the time most of the following show up, the condition is usually well advanced:

  • Yellowing of the skin or the whites of the eyes (jaundice) — from bilirubin building up when the liver cannot clear it.
  • Persistent tiredness — one of the commonest complaints, and one of the least specific.
  • Discomfort or a dull ache under the right ribs — the liver itself has no pain fibres, but its outer capsule does, and stretching it as the liver enlarges causes this.
  • Dark urine and pale stools — both point to bile not reaching the gut as it should.
  • Nausea, loss of appetite or unintended weight loss.
  • Itchy skin — from bile salts accumulating under the skin.
  • Easy bruising or bleeding — the liver makes most clotting factors, so its decline shows up here.
  • Swelling of the abdomen or ankles — fluid accumulating when albumin production falls; a sign of more advanced disease.

Any of these warrants a check. So does having none of them if you carry the risk factors above.

Understanding Your Liver Function Test Results

Liver enzymes are reported in units per litre (U/L) and bilirubin in micromoles per litre (µmol/L). Reference ranges differ between laboratories and assay methods, and are typically set slightly higher for men than for women, so read the range printed on your own report rather than a general figure. What follows is what each marker points to, which is what actually helps you understand the result.

Liver function test markers and what a raised result suggests
Marker Where it comes from What a raised level points to
ALT (SGPT) Mainly inside liver cells Liver cell injury — the most liver-specific marker. Commonly raised in fatty liver, hepatitis and medication effects
AST (SGOT) Liver, but also muscle and heart Liver cell injury, but can also rise from intense exercise or muscle damage. An AST higher than ALT raises the question of alcohol
ALP Bile ducts and bone Obstructed bile flow — gallstones, bile duct problems. Can also reflect bone conditions, which is why GGT is read alongside it
Gamma GT (GGT) Bile ducts Bile duct problems, and the marker most sensitive to alcohol. A raised GGT with a raised ALP points to the liver rather than bone
Total bilirubin Breakdown of old red blood cells The liver not clearing bilirubin, or bile flow being blocked. High levels cause jaundice
Albumin (fuller panels) Made by the liver A low level suggests reduced manufacturing capacity over a sustained period — a longer-term function marker rather than an injury marker

Your doctor reads the pattern rather than any single number. A predominantly ALT and AST rise suggests injury to liver cells; a predominantly ALP and GGT rise suggests a problem with bile flow. The size of the rise matters too — a mildly raised ALT is common and often traces back to fatty liver, while a very high reading points elsewhere and is investigated more urgently.

Can liver tests be normal when something is wrong?

Yes — and this is worth knowing before you read your report. Liver function tests can be entirely normal in people with significant fatty liver, and even in some people with established cirrhosis. The enzymes measure ongoing cell injury, not accumulated scarring, and the liver's reserve means a great deal of function can be preserved while damage builds quietly underneath.

A normal result is reassuring, but it does not on its own rule out liver disease. Where there is genuine clinical suspicion — someone with obesity and diabetes, or a long history of alcohol use — your doctor may recommend an ultrasound of the liver or an assessment of scarring even when the bloods look fine. This is exactly the kind of judgement that a consultation adds to a set of numbers.

Do I Need to Fast Before a Liver Function Test?

Usually not. The standard liver enzymes and bilirubin do not require fasting, so a liver panel can be done at any time of day. Fasting comes into it only when your liver panel is done alongside other tests that do need it — a fasting glucose or a lipid panel as part of a wider screen, for example. Tell us what you are having done and we will confirm.

For a liver test specifically, what you do in the days beforehand matters more than whether you have eaten:

  • Do not try to time the test around alcohol — recent drinking raises liver enzymes, gamma GT especially, and GGT clears slowly: it can stay raised for a few weeks after a heavy period, not just a day or two. Abstaining briefly beforehand will not reliably give you a clean result, so there is little point delaying the test for it.
  • Skip strenuous exercise for 24 hours — hard training breaks down muscle and raises AST, which can look like liver injury when it is not.
  • List your medications and supplements — including over-the-counter painkillers, bodybuilding and slimming supplements, and any traditional or herbal preparations. Several can raise liver enzymes, and your doctor needs the full list to interpret the result.
  • Mention any recent illness — a recent viral infection can raise liver enzymes temporarily.
  • Be straightforward about your usual alcohol intake — the pattern of results, particularly the ratio between AST and ALT, is interpreted differently depending on your drinking history. This is a clinical detail, not a judgement.

Take your usual medications as normal unless your doctor has specifically told you otherwise.

Fatty liver is common and usually silent — a blood test is how it is found.

A liver panel takes minutes and usually needs no preparation. Book it on its own, or fold it into a broader health screening. Same-day appointments available across our four clinics, subject to slots — or have the blood draw done at your home.

Book Your Appointment Today

Liver Function Test Price in Singapore

The liver panels below run from the core enzymes to a full assessment including hepatitis screening and a liver cancer marker. A liver panel is also already included in most of our broader health screening packages, which is often the more economical route if you want a fuller picture.

Liver function test pricing in Singapore
Test What it includes Price*
Liver Function Test A Total Bilirubin, Alkaline Phosphatase (ALP), ALT (SGPT), AST (SGOT), Gamma GT $30.52
Liver Function Test B Total Bilirubin, Alkaline Phosphatase (ALP), ALT (SGPT), AST (SGOT), Gamma GT, Total Protein, Albumin, Globulin, A/G Ratio $34.88
Liver Function Test C Total Bilirubin, Alkaline Phosphatase (ALP), ALT (SGPT), AST (SGOT), Gamma GT, Total Protein, Albumin, Globulin, A/G Ratio, LDH, Hepatitis Bs Antigen & Antibody, Hepatitis A Total IgG, Alpha Fetoprotein (AFP) $91.56
Ultrasound Liver (Full HBS) Imaging scan of the liver, gallbladder, bile ducts and surrounding structures — looks at structure rather than enzymes, and can show fatty change the bloods may miss $196.20
[Optional] Home Blood Draw — We Come to You
For busy schedules, limited mobility, or anyone who would rather not sit in a waiting room.
A nurse or phlebotomist comes to you for the blood draw — the same panel, taken at home instead of at a clinic $54.50 (per location, up to 5 pax)
Doctor consultation May be required so your doctor can confirm the test is appropriate and interpret your result — waived with a referral, when repeating a regular test, or when the liver panel is bundled in a health screening package From $49.05

* Prices are NETT and inclusive of GST. Liver function tests done for chronic disease management under the CDMP may have MediSave or subsidy eligibility for eligible Singapore Citizens and Permanent Residents — check with our team before your visit. An ultrasound of the liver is a separate imaging scan, not part of a liver panel, and is arranged where your result or symptoms warrant it.

Last updated: Aug 01, 2026. While every effort is made to keep pricing information up to date, please WhatsApp 8095 3275 to confirm the latest rates.

Can Fatty Liver Be Reversed?

This is the question most people ask once a liver result comes back raised, and the encouraging answer is that in its early stages, yes.

Fatty liver progresses along a path: simple fat accumulation first, then inflammation, then scarring (fibrosis), and ultimately cirrhosis. Simple fatty liver can improve substantially and in many people resolve, because the liver has a real capacity to recover once the underlying driver is removed. Once significant scarring has developed, established scarring is much harder to reverse — which is precisely why finding it early is worth doing.

The measures with evidence behind them:

  • Lose weight gradually — losing around 5 to 10 per cent of body weight is associated with a meaningful reduction in liver fat, with greater loss associated with improvement in inflammation as well. Gradual loss is important; very rapid weight loss can worsen liver inflammation.
  • Cut sugar and refined carbohydrates — sugary drinks and fructose in particular drive fat production in the liver.
  • Move regularly — both aerobic activity and resistance training reduce liver fat, and they help even where weight itself does not shift much.
  • Reduce or stop alcohol — alcohol compounds metabolic fatty liver, and the two together do more damage than either alone.
  • Treat diabetes and cholesterol — controlling blood sugar and lipids improves the liver alongside everything else. Some diabetes medication classes have been shown to reduce liver fat, and your doctor will advise what suits your situation.
  • Review supplements and medications — some bodybuilding and slimming supplements and certain traditional or herbal preparations can injure the liver. Bring the full list to your consultation.
  • Get hepatitis B checked and vaccinated if you are not immune — a second cause of liver damage on top of fatty liver accelerates the whole process.

No supplement, tea or detox regimen has been shown to reverse fatty liver, and some carry real risk to the liver itself. The approach that works is the ordinary one: address the metabolic drivers, recheck the bloods after a few months, and track the trend.

Get in Touch

How Do I Book a Liver Function Test?

Fill in the form below, or WhatsApp us on 8095 3275.

FAQ

Liver Function Test: Common Questions

What patients in Singapore most often ask about liver function testing.

What is a liver function test and what does it include?

A liver function test (LFT), also called a liver panel or liver enzymes test, is a group of blood tests showing how well your liver is working and whether liver cells are being damaged. The basic panel measures total bilirubin, ALP, ALT (SGPT), AST (SGOT) and gamma GT. A fuller panel adds total protein, albumin, globulin and the A/G ratio, which reflect the liver's manufacturing capacity. The most complete panel also includes LDH, hepatitis B surface antigen and antibody, hepatitis A IgG and alpha-fetoprotein (AFP). It is one panel, taken from a single blood draw.

Do I need to fast before a liver function test?

Usually not. The standard liver enzymes and bilirubin do not require fasting, so a liver panel can be taken at any time of day. Fasting comes into it only when your liver panel is done alongside other tests that do need it, such as a fasting glucose or a fasting lipid panel — tell us what you are having done and we will confirm. More important than fasting is avoiding strenuous exercise in the 24 hours before the draw, since hard training raises AST and can make the result harder to interpret, and telling your doctor about your usual alcohol intake so the enzyme pattern can be read properly.

What do ALT and AST mean, and what is a normal range?

ALT (alanine aminotransferase, also written SGPT) and AST (aspartate aminotransferase, also written SGOT) are enzymes found inside liver cells. When those cells are injured or inflamed they leak into the blood, so a raised level signals liver cell damage rather than telling you the cause. ALT is the more liver-specific of the two; AST is also found in muscle and the heart, so it can rise after intense exercise or a muscle injury without any liver problem. Reference ranges vary between laboratories and assay methods, and are usually set slightly higher for men than women, so read the range printed on your own report. Your doctor interprets the size of the rise, the pattern across the other markers and your history together.

Can I have liver disease with a normal liver function test?

Yes, and this is one of the most important things to understand about the test. Liver function tests can be entirely normal in people with significant fatty liver, and even in some people with established cirrhosis, because the liver has considerable reserve and enzyme levels reflect ongoing cell injury rather than accumulated scarring. A normal result is reassuring but does not by itself exclude liver disease. Where there is real clinical suspicion — for example someone with obesity, diabetes or a long history of alcohol use — your doctor may recommend an ultrasound of the liver or a fibrosis assessment even when the blood tests look normal.

What causes raised liver enzymes?

The most common cause in Singapore is fatty liver disease, linked to excess weight, diabetes, high cholesterol and metabolic syndrome. Other common causes include alcohol, chronic hepatitis B or C, and medications and supplements — including some prescription medicines, over-the-counter painkillers at high dose, and certain traditional or herbal preparations. Less common causes include autoimmune liver disease, iron or copper overload conditions, gallstones or bile duct obstruction, and thyroid disease. A mild rise is common and often reversible; the job of the consultation is to work out which cause applies to you and whether further tests are needed.

Can fatty liver be reversed?

In its early stages, yes. Simple fatty liver — fat accumulation without significant inflammation or scarring — can improve substantially and in many people resolve, because the liver has a real capacity to recover once the underlying driver is addressed. Losing around 5 to 10 per cent of body weight is associated with a meaningful reduction in liver fat, with greater loss associated with improvement in inflammation as well. Once significant scarring (fibrosis, and ultimately cirrhosis) has developed, established scarring is much harder to reverse — which is why detecting fatty liver early matters. Alcohol reduction, regular exercise, and treating diabetes and cholesterol all contribute.

Does alcohol affect a liver function test?

Yes. Recent alcohol intake can raise liver enzymes, particularly gamma GT (GGT), which is sensitive to alcohol. GGT also clears slowly — it can stay raised for a few weeks after a heavy period of drinking, not just a day or two — so abstaining briefly before the blood draw will not reliably give you a clean result. The more useful step is to be straightforward with your doctor about your usual intake, because the pattern of enzyme results, especially the ratio between AST and ALT, is interpreted differently depending on your alcohol history. This is a clinical detail, not a judgement.

What are the symptoms of liver problems?

Early liver disease usually causes no symptoms at all, which is why it is normally picked up on a blood test rather than because someone feels unwell. When symptoms do appear they can include yellowing of the skin or eyes (jaundice), persistent tiredness, discomfort or a dull ache under the right ribs, nausea and loss of appetite, dark urine, pale stools, itchy skin, easy bruising or bleeding, and swelling of the abdomen or ankles. Because these overlap with many other conditions and tend to appear late, they are not a reliable way to detect liver disease. Do not wait for symptoms if you carry risk factors such as excess weight, diabetes, regular alcohol use or hepatitis B.

How much does a liver function test cost in Singapore?

At our clinics Liver Function Test A is $30.52 NETT inclusive of GST, covering total bilirubin, ALP, ALT, AST and gamma GT. Liver Function Test B is $34.88 and adds total protein, albumin, globulin and the A/G ratio. Liver Function Test C is $91.56 and adds LDH, hepatitis B surface antigen and antibody, hepatitis A total IgG and alpha-fetoprotein (AFP). A doctor consultation (from $49.05 NETT) may be required for a specifically requested test, so your doctor can confirm it is appropriate and interpret your result; this is waived with a referral, when repeating a regular test, or when the liver panel is bundled in a health screening package. An ultrasound of the liver is $196.20. See the full pricing table above or WhatsApp 8095 3275 to confirm current rates.

Our Locations

4 Clinics Across Singapore

Men's health services — screening, testosterone, erectile dysfunction, hair loss and weight management — are available at all four clinics. Dr Joel practises at Jurong; our other male physicians cover Tanjong Pagar (Anson House), Orchard and Novena. Medication from telemedicine consultations can be collected at any location.

Jurong

21 Jurong Gateway Rd, #02-08
CPF Jurong Building
Singapore 608546

Mon–Fri: 8:30am–12:30pm, 1:30pm–5:30pm
Sat: 8:30am–12:30pm
Sun & PH: Closed
View Map

Tanjong Pagar

72 Anson Rd, #01-02
Anson House
Singapore 079911

Mon–Fri: 8:30am–12:30pm, 1:30pm–5:30pm
Sat: 8:30am–12:30pm
Sun & PH: Closed
View Map

Orchard

1 Orchard Blvd, #05-09
Camden Medical Centre
Singapore 248649

Mon–Fri: 8:30am–12:30pm, 1:30pm–5:30pm
Sat: 8:30am–12:30pm
Sun & PH: Closed
View Map

Novena

101 Irrawaddy Road, #09-01
Royal Square Medical Centre
Singapore 329565

Mon–Fri: 8:30am–12:30pm, 1:30pm–5:30pm
Sat, Sun & PH: Closed
View Map

Navigate to Our Jurong Clinic

Speak to Dr Joel

Liver Function Test
in Singapore

WhatsApp us to book a liver panel on its own or as part of a health screening — usually no fasting, a quick blood draw, and a doctor to explain what your ALT, AST and GGT mean. Same-day appointments across our four clinics, subject to slots.