What a coronary calcium score is
A coronary calcium score is a number derived from a low dose CT scan that measures calcium in the walls of the coronary arteries. We use the score as one piece of your overall heart risk picture, combining it with age, blood pressure, cholesterol, diabetes status and family history to decide next steps.
The test reports an Agatston score, commonly called the coronary artery calcium or CAC score. A higher score means more calcified plaque, which raises the likelihood of coronary artery disease, but the score must be interpreted in context rather than alone.
Who we usually recommend for testing
We order a coronary calcium score when the result will change management. Typical reasons we consider it include:
- People aged 40 to 75 when the risk is uncertain after standard risk calculators.
- Adults with intermediate risk who want more information to guide decisions about preventive medicines.
- People with diabetes, a family history of premature coronary disease, or other risk enhancers where imaging will clarify risk.
- Patients whose cholesterol or blood pressure treatments are being reconsidered and where a score would influence that decision.
Testing is not routine for everyone, and we discuss the value and limits of the scan before ordering it.
How we use the score in your preventive cardiology plan
At The NY Center for the Prevention of Heart Disease we treat the coronary calcium score as a risk refinement tool. We never use it in isolation. Our typical approach follows clear steps.
- Gather context. We review your history, risk factors, prior tests and current medications.
- Obtain or review the CT result. We look at the Agatston score and the distribution of calcium.
- Frame the result for the patient. We explain what the number means for near term and long term risk, and how it changes absolute risk compared with clinical calculators alone.
- Decide next steps. For modest scores we emphasize lifestyle change and monitoring. For higher scores we discuss intensifying risk factor control, which can include cholesterol management or blood pressure changes. Sometimes we recommend additional imaging, for example a coronary CT angiogram, to look at the arteries more closely to learn more about coronary CT angiogram.
- Plan follow up. We set a monitoring schedule and document the plan so your primary care doctor and other specialists are aligned.
Our goal is measurable risk reduction, not just a number. Dr. Bradley Radwaner leads this process, personalizing recommendations for each patient.
Common score ranges and what they typically mean
Clinicians often use ranges to summarize risk, while remembering that interpretation depends on age and other risk factors. A typical framework looks like this:
- Score of 0: no detectable calcified plaque, lower near term risk. We may favor lifestyle measures and monitoring.
- Score 1 to 99: small amount of calcified plaque, usually managed with lifestyle change and risk factor control, sometimes with medication depending on overall risk.
- Score 100 to 399: moderate plaque burden. We usually recommend more aggressive risk factor management and consider medication intensification.
- Score 400 or above: higher plaque burden, often prompting a focused prevention plan and consideration of additional testing.
These ranges are a clinical guide. We place your score against your personal risk profile before suggesting changes in therapy.
What to expect during the test
The coronary calcium scan is quick and requires little preparation.
Before the scan
- Bring a list of current medications and your health history.
- Wear comfortable clothing without metal at the chest level.
- Tell the imaging team about pregnancy or contrast allergies if relevant.
During the scan
- The scan takes a few minutes and uses a small radiation dose.
- You lie on a table that moves through the CT scanner while images are acquired.
- No contrast dye is required for a plain calcium score study.
After the scan we review the images, calculate the Agatston score, and discuss results with you at a follow up visit or phone review.
Watch out: A calcium score measures calcified plaque only. It will not detect soft plaque that has not calcified, and a low or zero score does not eliminate future risk. Decisions about medicines and aggressive prevention still depend on the full clinical picture.
Practical tips on timing and follow up
We will recommend when to repeat testing based on your initial score and risk changes. Common considerations include:
- Repeat testing is rarely needed within a short interval unless clinical status changes.
- If you start or change preventive medications, we track risk through clinical markers rather than frequent repeat scans.
- For people with a rising risk profile or new symptoms, we may move to more detailed imaging or functional testing.
Pro tip: Bring prior imaging reports to your appointment. Comparing past tests helps us judge progression and tailor your plan.
How this fits into our preventive cardiology services
We use coronary calcium scoring as part of a broader preventive cardiology strategy that includes cholesterol management, blood pressure control, and lifestyle counseling. If the score suggests higher risk, we coordinate care with your primary care doctor and other specialists and may recommend targeted treatments available through our preventive cardiology program to learn about our preventive cardiology services. We also draw on advanced imaging information found in resources about cardiac imaging to learn about cardiac imaging when needed.
We provide care to adults across the New York metropolitan area, including patients who live or work near Hudson Yards and throughout Manhattan to learn about our New York location.
Key takeaway
A coronary calcium score is a fast, noninvasive way to refine heart risk. We interpret the score in the context of your complete risk profile and use it to guide prevention, monitoring and coordination with your other healthcare providers.
Frequently asked questions
Is the scan safe and does it use contrast?
The coronary calcium scan uses a low dose CT and does not require contrast dye. The radiation exposure is small compared with many other medical imaging tests. We discuss any safety concerns before scheduling.
Will a zero score mean I can stop medicines?
A zero score lowers near term risk but does not automatically mean stopping medicines. Decisions about medications depend on your overall risk, age and other health conditions. We review these factors with you.
How quickly will I get results?
Images are processed quickly and we typically review the Agatston score at a follow up visit or phone discussion within days. We explain what the number means and the recommended next steps.
How often should the test be repeated?
Repeat testing depends on your baseline score and any change in risk. We rarely repeat the scan at short intervals unless clinical circumstances change. Follow up plans are individualized.
Learn more and see patient feedback
Check our Google Business Profile to read patient reviews and get directions. For more detail about how imaging fits into prevention, read about coronary CT angiogram and other cardiac imaging resources on our site, or explore our preventive cardiology services Read about preventive cardiology.
Coronary CT Angiogram | Cholesterol Management | Cardiac Imaging Explained

