What a Coronary Calcium Score Means
October 17, 2026 · 2 min read
Medically reviewed by the physicians of Gilead Heart & Vascular · Last reviewed: 2026-10-17
A coronary calcium score is a specialized CT scan that measures calcified plaque in your heart's arteries, giving a direct snapshot of how much heart disease has already developed rather than an estimate based on risk factors alone.
What the Test Actually Measures
A coronary calcium score comes from a specialized CT scan that measures the amount of calcified plaque present in the arteries supplying blood to your heart. Because calcium is a marker of atherosclerosis, or plaque buildup, this score offers a direct, visual snapshot of how much heart disease has already developed, rather than an estimate based on risk factors alone.
The test itself is quick, painless, and doesn't require an IV or contrast dye. The result comes back as a single number, called an Agatston score, which reflects the total amount of calcified plaque detected.
Interpreting Your Score
A score of zero generally indicates no detectable calcified plaque and is associated with a lower near-term risk of a cardiac event. Scores climb from there, with higher numbers reflecting a greater burden of plaque and, generally, higher cardiovascular risk. However, a score is never interpreted in isolation.
Your physician looks at your score alongside your cholesterol, blood pressure, family history, diabetes status, and other risk factors to build a complete picture. A moderate score paired with several other risk factors may prompt a different response than the same score in someone with an otherwise clean risk profile.
What Happens After You Get Your Score
Depending on your results, next steps can range from continued lifestyle-focused prevention for a low score, to starting or adjusting cholesterol-lowering medication for a moderate or elevated score, to additional testing if the score is very high. The goal is always to translate your number into a clear, individualized plan, not to leave you with a score and no direction.
Who This Test Is Best Suited For
A coronary calcium score is most useful for patients in an intermediate risk category, not clearly low-risk, not clearly high-risk, where the result can meaningfully change the plan. For someone already diagnosed with heart disease or already on aggressive treatment, the score adds less new information. Your physician can help determine whether you're a good candidate before you schedule one.
Frequently Asked Questions
What is a good calcium score?
A score of zero generally indicates no detectable calcified plaque and is associated with lower near-term cardiac risk; your physician interprets your score alongside other risk factors.
Is a calcium score covered by insurance?
Coverage varies by plan; our team can help verify your benefits before scheduling.
How often should I get a calcium score?
This depends on your initial result and overall risk profile; your physician will recommend a reasonable interval, if any, for repeat testing.
Related Reading
- heart diagnostic imaging
- Preventive Cardiology
- Does insurance cover a coronary calcium score
- Coronary Calcium / Heart Scan
Want to be seen soon and skip the wait at a place close to home? If you've had a coronary calcium score done, or are wondering whether you should, Gilead Heart & Vascular can walk you through what it means for you.
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Talk it through with your doctor at any Gilead Heart & Vascular location.