Health

Complete Guide to Heart Tests: Types, Procedures & What They Detect

4 min read March 30, 2026

Heart tests are vital diagnostic tools for identifying cardiovascular diseases (CVDs), the leading global cause of death.

Heart Disease Symptoms

Cardiovascular diseases (CVDs) are a group of disorders of the heart and blood vessels, including coronary heart disease, cerebrovascular disease, peripheral arterial disease, rheumatic heart disease, congenital heart disease, deep vein thrombosis, and pulmonary embolism.

In India, CVDs account for 27% of noncommunicable disease deaths, or 45% in the 40-69 age group.

Global and Indian CVD Statistics

CVDs caused 19.8 million deaths worldwide in 2022, 32% of all deaths, with 85% from heart attacks and strokes. Over 75% occur in low- and middle-income countries, including India, where NCDs drive 63% of total deaths.

Premature CVD deaths under 70 comprise 38% of NCD fatalities. Behavioral risks like unhealthy diet, inactivity, tobacco, alcohol, and air pollution elevate blood pressure, glucose, lipids, obesity, and hypertension.

Role of Heart Tests in Diagnosis

Early heart tests detect CVDs before acute events, enabling prevention through counseling and medication. They assess risk factors like raised blood pressure and identify coronary heart disease, cerebrovascular issues, peripheral arterial disease, rheumatic heart disease, congenital heart disease, and thrombosis.

Mankind Pharma promotes heart health via awareness campaigns and tips on exercise, diet, and checkups.

Basic Types of Heart Tests

Basic tests provide foundational cardiac insights non-invasively.

Blood Tests

Following a heart attack, certain cardiac proteins gradually leak into the bloodstream. Blood tests can detect these proteins. Troponin is a protein that appears in the blood only when the heart muscle is damaged, as in a heart attack.The cardiac troponin test detects damage to the heart muscle. A high-sensitivity C-reactive protein (CRP) test detects a protein associated with arterial inflammation.

A lipid panel is a common blood test used by healthcare providers to assess your risk of cardiovascular disease. The panel includes three cholesterol measurements and one triglyceride measurement.

Electrocardiogram (ECG)

An ECG is a quick and painless test that records the strength and timing of electrical signals in the heart. It can tell whether the heart’s rhythm is steady or irregular. Electrodes are attached to the chest, arms, and legs, and electrical activity is recorded for upto a minute. ECGs can detect arrhythmias, ischemia, and infarcts.

Echocardiogram

An echocardiogram (or “echo”) is an ultrasound scan of the heart. This is a painless procedure that employs high-frequency sound waves to generate an image of your heart.

Echocardiography can detect blood clots in the heart, fluid buildup in the pericardium (the sac surrounding the heart), tumours, and aortic issues. Echo can also help your doctor locate the origin of irregular heart sounds, such as heart murmurs, caused by damaged heart valves.

Advanced Heart Tests

Advanced tests evaluate function under stress or detailed anatomy.

Stress Tests

A stress test evaluates how the heart reacts to physical or chemical stimulation using an EKG.

There are three categories of cardiac stress tests:

Exercise stress test – this involves stimulating the heart through activity on a treadmill.
Chemical stress test – for individuals unable to exercise on a treadmill, an IV-administered drug is used to stimulate the heart.
Nuclear perfusion stress test – this is a more detailed examination where the heart is stimulated via an exercise or chemical stress test, and imaging is conducted to assess blood flow.

A cardiac stress test can assist in diagnosing:

Coronary artery disease.
Ischemia and exercise‑induced arrhythmias (irregular heartbeat), or heart block.
Heart valve disease

Cardiac Imaging

Cardiac imaging tests deliver detailed visualisations of heart anatomy and function, essential for diagnosing structural abnormalities, fluid accumulation, and vascular issues. These non-invasive to minimally invasive procedures guide precise interventions for coronary artery disease.

Chest X-ray: A quick, low-radiation imaging technique uses electromagnetic waves to project the heart silhouette on film. It checks for an enlarged heart (cardiomegaly), pulmonary congestion, fluid in the lungs (pulmonary edema), or a widened aorta indicating an aneurysm/dissection. Commonly first-line for heart failure symptoms
CT Angiography (Cardiac CT): High-resolution computed tomography with IV contrast dye scans the coronary arteries. This detects calcium deposits (via Agatston score), plaque buildup, or aneurysms.
Cardiac MRI: Magnetic resonance imaging employs magnetic fields and radio waves for 3D, multi-slice heart images. Assesses tissue viability; post-infarct scarring; inflammation (myocarditis); tumours; congenital defects; or valve regurgitation.
Coronary Angiogram: Gold-standard invasive catheterisation threads a dye-filled catheter via the femoral/radial artery to the coronaries under X-ray fluoroscopy. Coronary Angiogram visualises exact blockage locations/percentages, enabling angioplasty/stenting.

Prioritizing Cardiac Screening

Heart tests empower early detection of cardiovascular diseases, enabling timely care and treatment.