Medically Reviewed By: Dr Paul Lim – MBBS, M.Med (Int Med), MRCP (UK), FAMS (Cardiology)
Apolipoprotein B Test ApoB Blood Test in Singapore
Apolipoprotein B — or ApoB — is the structural protein that forms every harmful, artery-clogging cholesterol particle in your blood. Measuring it counts the number of those particles, which is often a truer guide to your heart-disease risk than LDL cholesterol alone. It is a simple blood test that adds important detail a standard cholesterol panel can miss.
Clinical Experience
Your ApoB Result Is Interpreted by Dr Paul Lim
Senior Consultant Cardiologist & Cardiac Electrophysiologist
Dr Paul Lim is a Senior Consultant Cardiologist who reviews your apolipoprotein B result in the context of your full cardiovascular risk — your other cholesterol numbers, blood pressure, family history and lifestyle — and explains what it means for you and what, if anything, to do about it. He completed advanced fellowship training at Barts Heart Centre, London under Singapore’s HMDP award.
- MBBS (Singapore)
- M.Med (Int Med)
- MRCP (UK)
- FAMS (Cardiology)
- Fellow, European Society of Cardiology (FESC)
- Fellow, American College of Cardiology (FACC)
- Fellow, Heart Rhythm Society (FHRS)
What Is Apolipoprotein B?
Apolipoprotein B, usually written ApoB, is the structural protein that forms each harmful, artery-clogging cholesterol particle in your blood — including LDL (the so-called “bad” cholesterol), VLDL, IDL and lipoprotein(a). Each of these particles contains exactly one ApoB molecule as its scaffold, so measuring ApoB effectively counts the total number of harmful particles circulating in your blood.
That matters because heart-disease risk is driven not only by how much cholesterol you carry, but by how many harmful particles there are. Two people can have the same LDL cholesterol yet very different particle numbers — and ApoB picks up that difference. That is why a high ApoB is important information even when a standard cholesterol panel looks reassuring.
Why ApoB Is Important
ApoB measures the number of harmful particles, often a truer guide to risk than LDL cholesterol alone. Testing helps a cardiologist assess:
- Your risk of coronary artery disease and heart attack from furring-up of the arteries
- Your risk of stroke driven by atherosclerosis
- A hidden risk that a standard cholesterol panel can underestimate — especially with raised triglycerides, diabetes or metabolic syndrome, where your LDL cholesterol can look at goal while your ApoB stays high
- Whether your other risk factors — LDL cholesterol, blood pressure, diabetes — should be treated more intensively
- A target you can re-check to see whether cholesterol-lowering treatment is bringing your particle number down
ApoB is one piece of your overall risk picture, which is why it is best interpreted by a cardiologist alongside your other results — for example a lipoprotein (a) test, a CT calcium score or a full heart screening.
Who Should Have an ApoB Test?
An ApoB test is especially worth considering if you have:
- A personal or family history of early heart disease or stroke
- Raised cholesterol, or known familial hypercholesterolaemia
- Diabetes or metabolic syndrome, where LDL cholesterol can underestimate risk
- High triglycerides
- Heart disease that has progressed despite an apparently acceptable LDL cholesterol
- A wish to monitor how well cholesterol-lowering treatment is working, or to understand your cardiovascular risk as part of a thorough health check
Not sure whether the test is right for you? Dr Paul Lim can advise during a consultation and arrange it where appropriate.
What to Expect
The test itself is quick and straightforward.
- No fasting is needed — you can eat and drink normally and take your usual medicines before the test.
- A member of our clinical team takes a single blood sample from a vein in your arm. It takes only a few minutes.
- The sample is sent to the laboratory and your ApoB level is measured.
- Dr Paul Lim reviews the result alongside your other cholesterol numbers, blood pressure, family history and lifestyle, and explains what it means for you.
- If your ApoB is high, he will discuss how to lower your overall risk and, where you are already on treatment, whether it needs adjusting.
Why Do Your ApoB Test with Us?
A More Direct Risk Marker
ApoB counts the number of harmful particles, often a truer guide to your heart-disease risk than LDL cholesterol alone.
Interpreted by a Cardiologist
Your result is reviewed by Dr Paul Lim and explained in the context of your overall heart risk — not just handed to you as a number.
No Fasting, One Sample
A single blood draw with no fasting and no special preparation.
Track Your Treatment
Because ApoB responds to treatment, it can be re-checked to see whether your particle number is coming down to target.
Transparent Pricing
Our ApoB and consultation fees are published below, so you know the cost before you book.
Two Locations
Available at our Jurong and Orchard clinics.
Wondering if you should check your ApoB? Speak with Dr Paul Lim.
Apolipoprotein B Test Cost in Singapore
All fees are inclusive of GST.
| Service | Price |
|---|---|
| Test | |
| Apolipoprotein B — ApoB | S$32.70 |
| Basic Heart Check-Up Package An all-inclusive screening — includes ApoB, a cardiologist consultation & review, a comprehensive blood panel, a resting ECG and a treadmill stress test | S$368 |
| Consultation | |
| First Consultation with Cardiologist (Jurong) | S$130.80 |
| Follow-up Consultation with Cardiologist (Jurong) | S$98.10 |
| First Consultation with Cardiologist (Orchard) | S$272.50 |
| Follow-up Consultation with Cardiologist (Orchard) | S$163.50 |
A consultation with the cardiologist is required so the test can be properly indicated and your result interpreted in the context of your overall cardiovascular risk.
Apolipoprotein B is included in our heart screening packages. Because ApoB responds to diet and treatment, it can be repeated to track whether your particle number is coming down to target.
Book a Cardiologist Appointment
Contact us to schedule a consultation or to find out more about our cardiac services.
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Apolipoprotein B FAQ
What is apolipoprotein B (ApoB)?
Apolipoprotein B, usually written ApoB, is the structural protein that forms each harmful, artery-clogging cholesterol particle in your blood — including LDL (“bad” cholesterol), VLDL, IDL and lipoprotein(a). Each of these particles contains exactly one ApoB molecule as its scaffold, so measuring ApoB effectively counts the total number of harmful particles, which is a key driver of heart disease.
Why is ApoB important?
Heart-disease risk is driven not just by how much cholesterol you carry, but by how many harmful particles there are. Because every atherogenic particle contains exactly one ApoB, an ApoB level reflects that particle number directly. Two people can have the same LDL cholesterol but very different particle numbers — and ApoB picks up that difference, so it is often a truer guide to risk than LDL cholesterol alone.
Who should have an ApoB test?
An ApoB test is worth considering if you have a personal or family history of early heart disease, raised cholesterol, diabetes or metabolic syndrome, high triglycerides, or heart disease that has progressed despite an apparently acceptable LDL cholesterol. It is also useful if you want a clearer picture of your cardiovascular risk or to monitor how well cholesterol-lowering treatment is working. Dr Paul Lim can advise whether the test is appropriate for you.
How is ApoB different from a standard cholesterol test?
A standard lipid panel measures the amount of cholesterol carried in your LDL, HDL and triglycerides. ApoB instead measures the number of harmful particles. With raised triglycerides, diabetes or metabolic syndrome, your LDL cholesterol can look at goal while your ApoB remains high — so the standard panel can underestimate risk and ApoB gives a more reliable picture. ApoB has to be requested as a separate test.
Do I need to fast, and how is the test done?
No fasting is needed for an ApoB test. It is a single blood sample taken from a vein in your arm by a member of our clinical team, and takes only a few minutes.
How often should ApoB be checked?
Unlike an inherited marker, ApoB can change with diet and treatment, so it can be repeated to track progress. If you are on cholesterol-lowering treatment, your cardiologist may re-check ApoB to see whether your particle number is coming down to target.
Can a high ApoB be lowered?
Yes. A high ApoB usually responds to the same measures that lower LDL cholesterol — improving diet, increasing physical activity, losing excess weight, not smoking, and, where appropriate, cholesterol-lowering medicines such as statins. Dr Paul Lim will explain what your result means and the steps that can help lower your overall cardiovascular risk.
How much does an ApoB test cost in Singapore?
At our clinic an apolipoprotein B test is S$32.70, inclusive of GST. A cardiologist consultation is also required (S$130.80 first / S$98.10 follow-up at Jurong; S$272.50 first / S$163.50 follow-up at Orchard, inclusive of GST). ApoB is also included in our heart screening packages. See the fee table above.