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Calcium Test for Heart: What It Is, Why It’s Important, and How It Works?

By Dr. Subhash Chandra in Heart & Vascular Institute

Jun 02 , 2025 | 5 min read

Wondering if your heart is healthy—even when you feel fine? A calcium test for the heart might have the answer. It’s a quick, painless scan that checks for calcium buildup in your heart arteries—a sign that plaque may be forming. This plaque, made of fat and cholesterol, can harden over time and narrow the arteries, reducing blood flow. The test helps your doctor catch early signs of heart disease before symptoms like chest pain or breathlessness show up. If you have risk factors or a family history of heart problems, it’s a smart step to take.


What is a Calcium Test for the Heart?

A calcium test for the heart is an X-ray that examines whether or not there's calcium in the arteries leading to your heart. It's performed in order to scan for early signs of heart disease. A CT machine takes snapshots of your heart. The test is done with the intention to spot calcium before it develops significant problems, such as chest pain and heart attacks.

Why does calcium matter? Well, calcium shows up in your heart arteries when plaque builds up over time. This plaque is made of fat, cholesterol, and other things. If it hardens into calcium, it may reduce blood flow. The test helps your doctor figure out if your arteries are starting to get blocked, even if you don’t feel anything yet.

No injections. No fasting. It’s quick and painless.

Learn more about - Heart Attack Symptoms and Chest Pain Reasons & Prevention.


Why is a Calcium Score Important?

A calcium test is often used to check if you have coronary artery disease (CAD) early. It shows how much calcium is sitting in your arteries. This matters because plaque buildup over time leads to serious heart problems. If it’s caught early, you can fix things with simple steps like changing your diet or starting medicines.

Even if your blood pressure or cholesterol seems okay, plaque could still be forming in the background. So, this test gives a clear picture. Doctors use the calcium score to decide if you need treatment now or if you just need to watch things closely.

Read more about - Foods That Boost Heart Health.


Who Should Get a Calcium Test for the Heart?

This scan is mostly meant for people who are at higher risk of heart problems.

If you smoke, have diabetes, or have had high blood pressure or high cholesterol for years, your doctor might suggest testing for it. It’s also helpful if you have a family history of heart disease.

Read more about - 7 Myths About Hypertension and Facts.


How is a Calcium Test Performed?

The test uses a CT scan machine. You’ll lie on a table that moves inside a scanner. A technician will place a few small stickers (electrodes) on your chest to check your heartbeat during the scan.

The scan takes about 10-15 minutes. It’s not painful. You won’t need an injection or be asked to drink anything. You can eat before the test, and you can leave right after. Just wear comfortable clothes and follow any simple instructions your doctor gives.

There’s a little radiation involved, but it’s very small, less than what you get from some regular X-rays.


Understanding Your Calcium Score Results

After the scan, the doctor gives you a calcium score. This number shows how much calcium is in your heart arteries. Here’s what it means:

  • Score 0: No calcium. Low risk of heart disease.
  • Score 1-100: Small amount of calcium. Some early risk. You might be asked to eat better and come for a check-up in a year or two.
  • Score 101-400: Moderate calcium. High risk of heart disease. Your doctor might suggest medicines and regular follow-ups.
  • Score 400+: High amount of calcium. This means a higher chance of a heart attack. You’ll probably need more tests and changes to your current treatment plan.

These scores matter, but your overall health, age, and lifestyle also play a big part in what comes next.


What to Do If Your Calcium Score is High?

Don’t panic. A high calcium score means it's time to take things seriously. But there’s a lot you can do.

Start with your food. If you eat non-veg, try lean options like fish or chicken and reduce fried or red meats. If you’re a vegetarian, add more green leafy veggies, whole grains, fruits, and nuts. Whether you’re eating roti-sabzi or rice with dal, go for less oil and avoid processed stuff. A squeeze of lemon on food can help, too; it’s small but helpful.

Exercise helps a lot. Even a 30-minute brisk walk daily makes a big difference. Yoga or cycling works, too. And if you smoke, quitting is one of the best things you can do.

Your doctor might also prescribe statins to lower cholesterol or tablets for blood pressure. If your sugar is high, that needs to be controlled, too. Skipping follow-ups isn’t a good idea; you’ll need to track progress over time.

At BLK-Max Super Speciality Hospital, we can help guide you on personalised lifestyle changes, medication plans, and follow-up tests based on your calcium score. It's never one-size-fits-all; what works for one person might be different for another, and that’s why individual care matters.


Conclusion: Why the Calcium Test for Heart Matters

A calcium test for heart is simple and fast and gives important clues about your heart health. It shows if your arteries have calcium buildup and helps catch problems early, even before symptoms show. Based on your calcium score, your doctor can suggest food changes, exercise, or medicines that fit your risk level.

You don’t need to wait until a problem happens. Even if you feel fine, checking your heart health can help you plan better and feel more in control. And if something shows up, you still have time to fix it.

At BLK-Max Super Speciality Hospital, we offer you this calcium test in our preventive heart care package. If you’re worried about your heart, or if your family has a history of heart disease, this is one test worth considering.


Frequently Asked Questions

1. Is the calcium test for the heart painful?

No, not at all. It’s just a scan. No needles, no injections. You lie down, and it’s done in 10-15 minutes.

2. How long does it take to get calcium test results?

Usually, you’ll get the report in 1-2 days. Sometimes, even on the same day, depending on the hospital.

3. Can a calcium test detect blocked arteries?

Not exactly. It shows calcium buildup, which means plaque is there. It doesn't measure blood flow. If your score is high, your doctor may suggest more tests.

4. Does insurance cover a coronary calcium scan?

Some insurance plans cover it. Some don’t. It’s best to check with your provider to know for sure.

5. What is the difference between a calcium test and an angiogram?

The calcium test shows how much calcium is present. It’s a screening tool. An angiogram is more detailed and is done when a blockage is suspected. It shows real-time blood flow.

Know more about - Coronary Angiography & Angioplasty and TMT Test: What It Is and How It Helps Diagnose Heart Conditions.

6. Why would a cardiologist order a calcium test?

If you have risk factors like high cholesterol, diabetes, or a family history of heart disease but no symptoms yet, your doctor might recommend it to better understand your risk.


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