If you feel fine and want to know whether plaque is building in your arteries, a stress test won't tell you. It checks whether a narrowing limits blood flow when your heart works hard, which is why it's used for people with symptoms like chest pain. A calcium score looks at the plaque itself, but only the hardened part. A coronary CT angiogram (CCTA) sees soft plaque too, so of the three, it shows the most.
Key Takeaways
- A stress test answers a blood-flow question. For low-risk adults without symptoms, the US Preventive Services Task Force recommends against screening with an exercise or resting ECG.
- Passing doesn't mean no plaque. About two-thirds of heart attacks start in plaque that hasn't narrowed the artery enough for a stress test to notice.
- The scans look at plaque directly. A calcium score sees the hardened part, and a CCTA sees soft plaque as well.
What's the difference between a calcium score and a stress test?
A stress test watches your heart while it works harder, either on a treadmill or with medicine that has the same effect. A nuclear stress test adds a small amount of tracer and a camera to see whether any part of the heart muscle gets less blood. A calcium score and a CCTA take a different approach: they're CT scans that look at your arteries and the plaque inside them.
Calcium score vs. stress test vs. CCTA
| Calcium score | Nuclear stress test | CCTA | |
|---|---|---|---|
| Question it answers | Is hard plaque building up? | Is a blockage limiting blood flow? | What plaque is there, and how narrow are the arteries? |
| Usually used for | Statin decisions | People with symptoms | Seeing the full picture |
| What it misses | Soft plaque and narrowing | Plaque that doesn't limit blood flow yet | Very small plaque |
| Estimated national average price | $336 | About $4,100 | $1,314 |
Prices are MDsave estimates from October 2026 and vary by center.
Should you get a stress test if you have no symptoms?
For most people, no. The US Preventive Services Task Force recommends against screening low-risk adults who have no symptoms with an exercise or resting ECG.
It comes down to what a stress test can detect. It only flags a narrowing tight enough to cut blood flow, yet about two-thirds of heart attacks start in plaque that hasn't narrowed the artery much. So a normal result tells you your blood flow is fine today. It doesn't tell you whether plaque is building.
Read moreCCTA vs calcium score: which heart scan should you get?Calcium score or CCTA?
Once you're looking at the plaque itself, the question becomes how much of it you want to see. Guidelines lean on a calcium score mainly to help decide about a statin, and keep a CCTA for selected people, such as those with chest pain.
A calcium score is quick, cheaper, and needs no contrast dye, which makes it a good fit for a statin decision or when contrast isn't safe for you. What it can't pick up is soft plaque, the newer kind that's often riskier. A CCTA needs an IV for the dye and costs more, and in exchange it shows soft plaque, hard plaque, and narrowing in a single scan.
Which test fits your situation?
- You feel fine and want to know whether plaque is building: a CCTA shows the most, and a calcium score shows the hardened part.
- You're deciding about a statin, or contrast isn't safe for you: this is what a calcium score is built for.
- You get chest pain or shortness of breath with activity: this one is for your doctor. Heart guidelines list a CCTA as a first-line test for stable chest pain, alongside stress testing.
- Chest pain that's new, severe, or happens at rest: call 911.
The bottom line
A stress test and a calcium score aren't really rivals, because they answer different questions. A stress test is for symptoms and looks at blood flow. A calcium score looks at hardened plaque, and a CCTA looks at all of it, soft and hard, along with any narrowing. Veevo offers the CCTA and the calcium score in California and New York; see current prices.
Frequently Asked Questions
For someone without symptoms, it usually tells you more, because it looks at plaque instead of blood flow. A CCTA goes further and shows soft plaque as well. A stress test is mainly for checking symptoms like chest pain.
Yes. A stress test only catches narrowings tight enough to limit blood flow. Plaque that hasn't reached that point won't show up, and that's where most heart attacks start.
For seeing plaque, yes. A CCTA shows soft plaque, hard plaque, and narrowing, while a stress test answers whether a narrowing limits blood flow during exercise. If you have chest pain, your doctor will pick the test that fits.
6 Sources
US Preventive Services Task Force (JAMA) Screening for cardiovascular disease risk with electrocardiography: recommendation statement
https://pubmed.ncbi.nlm.nih.gov/29896632/Circulation Coronary plaque disruption
https://pubmed.ncbi.nlm.nih.gov/7634481/American College of Cardiology 2021 Guideline for the evaluation and diagnosis of chest pain: ten points to remember
https://www.acc.org/Latest-in-Cardiology/ten-points-to-remember/2021/10/27/14/06/2021-Guideline-for-Chest-Pain-gl_chestpainMDsave How much does a cardiac CT calcium scoring cost?
https://www.mdsave.com/procedures/cardiac-ct-calcium-scoring/d785f4cfMDsave How much does a nuclear stress test cost?
https://www.mdsave.com/procedures/nuclear-stress-test-myocardial-perfusion-scan/d784fcc8MDsave How much does a cardiac CT coronary angiography cost?
https://www.mdsave.com/procedures/cardiac-ct-coronary-angiography/d786ffc8