Heart disease remains one of the leading causes of death in Singapore. While cholesterol, blood pressure, and lifestyle factors are important indicators of cardiovascular health, they do not always reveal whether plaque has already started building up inside the coronary arteries. A coronary calcium score can provide additional insight by detecting calcified plaque before symptoms develop.
This non-invasive scan offers Singaporeans a clearer picture of potential coronary artery disease risk and may support earlier preventive action.
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What Is a Coronary Calcium Score?
A coronary calcium score, also known as a coronary artery calcium (CAC) score, is a specialised Computed Tomography (CT) scan that measures the amount of calcified plaque in the coronary arteries, which supply oxygen-rich blood to the heart muscle.
Plaque can develop over time from cholesterol, fats, inflammatory substances, and calcium deposits. As plaque accumulates, arteries may narrow or harden, increasing the risk of coronary artery disease, angina, or heart attack.
The scan produces an Agatston Score, which is commonly interpreted as follows:
- 0: No detectable calcified plaque; generally low risk of coronary artery disease
- 1–99: Mild calcified plaque; some degree of coronary atherosclerosis
- 100–399: Moderate plaque burden; increased cardiovascular risk
- 400 and above: Extensive plaque burden; higher likelihood of significant coronary artery disease
While the score can help with risk stratification, it should not be used alone to diagnose a heart attack or predict an exact outcome.
The Link Between High Blood Pressure and Coronary Calcium Score
The connection between hypertension (high blood pressure) and coronary artery calcification is medically relevant.
Chronic high blood pressure can damage artery walls over time by placing continuous mechanical stress on the vascular lining. This may contribute to endothelial injury, inflammation, and plaque formation. As a result, individuals with poorly controlled hypertension may have a higher likelihood of developing coronary artery calcification.
However, it is important to note that a coronary calcium score does not directly measure blood pressure damage alone. Instead, it assesses calcified plaque burden, which may reflect cumulative cardiovascular risk from multiple factors such as:
- Hypertension
- High cholesterol
- Diabetes
- Smoking
- Family history
For Singaporeans with long-standing or borderline hypertension, a coronary calcium score may sometimes be considered by a doctor to refine cardiovascular risk assessment, particularly when treatment decisions are unclear.
Why Singaporeans May Consider a Coronary Calcium Score
Given Singapore’s urban lifestyle, sedentary work culture, and prevalence of conditions such as hypertension, diabetes, and hyperlipidaemia, some individuals may benefit from discussing this scan with a healthcare professional.
You may wish to ask a doctor whether this scan is appropriate if:
- You are generally between 40 and 70 years old and have cardiovascular risk factors
- You have a family history of premature heart disease
- You have borderline or elevated cholesterol
- You have hypertension
- You smoke or previously smoked
- Your cardiovascular risk is uncertain despite routine screening
This scan is usually quick, non-invasive, does not require exercise, and generally does not involve contrast dye.
Cost of Coronary Calcium Score in Singapore
According to online sources, costs in Singapore may vary depending on the provider, whether it is a stand-alone test or part of a larger screening package, and whether specialist consultation is required.
| Service Type | Estimated Cost (S$) |
|---|---|
| Stand-alone CT calcium score | Around S$380 or more |
| CT coronary angiogram | From S$1,200 to S$2,100 |
| Heart screening packages | S$300 to S$2,000+ depending on included tests |
Please note: Separate consultation fees for specialists or general practitioners may apply.
As pricing can differ across private hospitals, imaging centres, and public healthcare institutions, checking directly with the provider is advisable.
Important Limitations to Understand
A coronary calcium score can be useful, but it is not suitable for everyone and has limitations:
- It does not detect non-calcified (“soft”) plaque
- It does not confirm whether a blockage is severe
- It involves low-dose radiation exposure
- It may be less useful for very low-risk or very high-risk individuals where treatment decisions are already clear
A doctor may instead recommend other investigations, such as CT coronary angiography, stress testing, or blood pressure monitoring, depending on your symptoms and medical history.
Taking the Next Step: Specialist Consultations
A coronary calcium score should be interpreted in the context of your broader cardiovascular profile. If your score is elevated, consulting a qualified medical professional can help determine whether lifestyle changes, medication, or additional cardiac testing may be appropriate.
Specialists You May Consider
Choosing the right specialist can make a meaningful difference in understanding your cardiovascular health, blood pressure management, and preventive care options. Consider speaking with an experienced cardiologist or preventive health physician to determine the most suitable next steps for your needs.
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For inquiries or for an introduction to a specialist, contact us below.
Frequently Asked Questions (FAQs)
1. Is the coronary calcium score scan painful?
No. The procedure is non-invasive and typically painless. You will lie on a scanning table while the CT machine captures images of your heart.
2. How often should I undergo a coronary calcium score?
The frequency depends on your risk profile and doctor’s recommendation. In some lower-risk individuals with a score of zero, repeat testing may not be necessary for several years.
3. Does a high calcium score mean I will definitely have a heart attack?
No. A high score indicates increased cardiovascular risk, but it does not guarantee a heart attack. It is a risk assessment tool that may help guide preventive strategies.
4. Is this scan safe during pregnancy?
CT scans are generally avoided during pregnancy unless medically necessary due to radiation exposure. Always inform your healthcare provider if pregnancy is possible.
5. What is the difference between a coronary calcium score and CT coronary angiogram?
A coronary calcium score measures calcified plaque burden without contrast dye. A CT coronary angiogram uses contrast dye to assess coronary artery narrowing, plaque, and blood flow in more detail.