You can get a meaningful picture of your heart health through a combination of simple at-home checks, routine blood work, and clinical screenings. Some of these take less than a minute, while others require a doctor’s visit. The key is knowing which numbers matter, what they should look like, and when to dig deeper.
Start With What You Can Measure at Home
Two of the most useful heart health indicators require no equipment at all: your resting heart rate and your blood pressure (if you own a basic cuff).
A normal resting heart rate for adults falls between 60 and 100 beats per minute. To check yours manually, sit quietly for a few minutes, then turn one hand palm-up. Place the tips of your index and middle fingers from your other hand on the inside of your wrist, between the bone and the tendon on the thumb side. Press lightly until you feel each beat. Count the beats for 60 seconds using a watch or timer. That number is your resting heart rate. A rate consistently below 60 or above 100 when you’re at rest is worth mentioning to a doctor, and a rate below 35 to 40 or above 100 paired with symptoms like palpitations, chest pain, or dizziness needs prompt medical attention.
While you’re at it, pay attention to rhythm. Your pulse should feel steady and evenly spaced. Skipped beats, fluttering, or an irregular pattern can signal an arrhythmia, a condition where your heart’s electrical signals misfire.
Blood Pressure at Home
An inexpensive arm cuff from a pharmacy gives you a reliable blood pressure reading. Current guidelines from the American Heart Association break blood pressure into four categories:
- Normal: below 120/80 mm Hg
- Elevated: 120 to 129 systolic (top number) with the bottom number still under 80
- Stage 1 hypertension: 130 to 139 systolic, or 80 to 89 diastolic
- Stage 2 hypertension: 140 or higher systolic, or 90 or higher diastolic
If your top and bottom numbers fall into different categories, the higher category is the one that applies. A single high reading doesn’t necessarily mean trouble, but consistently elevated numbers over several days or weeks point to a real pattern. If your blood pressure is under 120/80, checking once a year at a regular health visit is generally enough.
What Wearable Devices Can Tell You
Smartwatches and fitness trackers now measure heart rate variability, or HRV, which tracks the tiny differences in time between each heartbeat. That variation reflects how well your autonomic nervous system is functioning. This is the system that ramps your heart rate up during stress and brings it back down during rest.
Higher HRV generally signals that your body adapts well to physical and emotional demands. Lower HRV is associated with increased cardiovascular risk and has been significantly correlated with heart failure in large-scale research. Trends matter more than any single reading here. If your HRV is steadily declining over weeks or months, or if it’s consistently low compared to your baseline, it may be worth discussing with a doctor. Wearables are useful for spotting patterns, but they aren’t diagnostic tools on their own.
Routine Blood Work That Matters
A standard lipid panel is one of the most important screening tools for heart disease, and the American Heart Association recommends getting one every four to six years starting at age 20 if your risk is normal. If you have elevated risk factors like a family history of heart disease, diabetes, or obesity, you’ll want it checked more often.
The key numbers on a lipid panel:
- LDL cholesterol: often called “bad” cholesterol. A goal below 100 mg/dL is common, though people at very high risk for heart attack or stroke may aim for 70 or even 55 mg/dL.
- HDL cholesterol: sometimes called “good” cholesterol. Higher is generally better, though current guidelines no longer treat it as a specific number to target.
- Triglycerides: a type of fat in the blood. Below 150 mg/dL is considered normal.
Blood glucose testing is another piece of the heart health puzzle, since diabetes significantly raises cardiovascular risk. Screening is recommended at least every three years starting at age 45, or earlier if you have risk factors like being overweight or having a family history of diabetes.
The Inflammation Marker Most People Don’t Know About
A blood test called high-sensitivity C-reactive protein (hs-CRP) measures inflammation in your body, which plays a direct role in artery damage and plaque buildup. It’s not part of a standard checkup for everyone, but your doctor may order it if your risk profile is borderline or unclear. The scoring is straightforward: below 1 mg/L is low risk, 1 to 3 is intermediate, and above 3 is high. This test is most useful as a tiebreaker when other numbers don’t paint a clear picture.
Clinical Tests Your Doctor May Order
Beyond blood work, there are several heart-specific tests that look at structure, electrical activity, and blood flow. You won’t necessarily need all of these, but it helps to know what each one does.
An electrocardiogram (EKG) records your heart’s electrical activity and can identify abnormal heart rates or rhythms. It’s quick, painless, and often done right in the office. An echocardiogram uses ultrasound to create images of your heart, revealing problems with its structure or how well it pumps. If your doctor suspects your heart isn’t getting enough blood during physical activity, they may order an exercise stress test, which monitors your blood pressure and heart rhythm while you walk on a treadmill or pedal a stationary bike.
For a more detailed look at plaque buildup in your arteries, a coronary calcium scan uses a CT scanner to measure calcium deposits. The result is a score that directly correlates with heart attack risk:
- Score of 0: no calcium detected, suggesting a low chance of heart attack
- Score of 100 to 300: moderate plaque deposits, associated with a relatively high risk of heart attack or other heart disease over the next three to five years
- Score above 300: more extensive disease and higher heart attack risk
This scan is particularly useful for people in a gray zone, where risk factors alone don’t clearly indicate whether aggressive prevention is needed.
Symptoms That Call for a Heart Checkup
Numbers and screenings catch problems early, but your body also sends signals. The symptoms that most often lead to a cardiology referral are chest pain, shortness of breath (especially during activity that didn’t used to wind you), dizziness, and heart palpitations, the sensation that your heart is racing, fluttering, or pounding.
These don’t always mean something serious, but they do warrant evaluation, particularly if they’re new, worsening, or happen during exertion. The combination of a fast or slow heart rate with any of these symptoms is an especially strong reason to get checked out promptly.
Putting It All Together
Heart health isn’t captured by any single test. The most complete picture comes from layering simple home monitoring (pulse, blood pressure) with periodic blood work (lipids, glucose, possibly hs-CRP) and clinical tests as needed. For most adults with no symptoms and normal risk, an annual blood pressure check, a lipid panel every four to six years, and a glucose test every three years form the baseline. If you have risk factors, a family history, or symptoms, your screening schedule should be more frequent and may include imaging or stress testing. Tracking your resting heart rate and HRV over time, whether manually or with a wearable, gives you a day-to-day window into how your cardiovascular system is functioning between those checkups.