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Coronary Artery Disease: Symptoms & Diagnosis

Symptoms of CAD

A significant narrowing in your coronary arteries (the arteries supplying blood to your heart), also known as obstructive coronary artery disease (CAD), causes a decrease in blood flow resulting in associated symptoms like chest discomfort, shortness of breath, or heartburn.

If you have symptoms suggestive of CAD, it's important to see your doctor so that he or she can determine the likelihood that you may have a significant narrowing in your coronary arteries. Severe narrowing or complete blockage of the coronary vessels can lead to a heart attack or even death.

Symptoms of CAD may include:

  Typical Symptoms

  • Chest discomfort, tightness, pain, or pressure
  • Shortness of breath

   Atypical Symptoms

  • Tightness or pressure in the throat, jaw, shoulder, abdomen, back, or arm
  • Squeezing, heaviness, or burning sensation in the upper body
  • Abdominal discomfort or fullness
  • Indigestion or heartburn
  • Nausea
  • Vomiting
  • Dizziness or light-headedness
  • Palpitations or awareness of heartbeat


Diagnosing CAD

Your doctor has several ways to evaluate if a narrowing of the heart arteries may be causing your symptoms. He or she can order imaging scans of your heart, test your response to exercise, or even perform surgical—also called invasive—procedures to look at your heart and to determine if a blocked artery is present. Often, more than one test is used to help determine whether or not you may have obstructive CAD.

Corus CAD Blood Test

Corus CAD is a convenient blood test that allows your doctor to quickly, accurately, and safely assess whether or not your chest discomfort or other symptoms may be due to obstructive CAD*. The blood test is safe (no radiation exposure) and convenient (often completed in-office). Your doctor can use the Corus CAD result, along with other clinical information about you, to determine whether or not further cardiac testing may be necessary.

Administered right in your doctor's office or wherever you go for blood tests, the Corus CAD test involves a single, quick, and simple blood draw, and results are typically available within a few days. In addition to being easy and safe, Corus CAD is the only sex-specific test for obstructive CAD that takes into consideration cardiovascular differences between men and women. This distinctive attribute of the Corus CAD test brings a unique perspective to your doctor's diagnosis.

Only your doctor can order the Corus CAD test for you. Talk to your doctor and ask if Corus CAD is right for you.


* Obstructive CAD is defined as at least one atherosclerotic plaque causing ≥50% luminal diameter stenosis in a major coronary artery (≥1.5 mm lumen diameter) as determined by invasive quantitative coronary angiography or coronary computed tomography angiography (≥2.0 mm lumen diameter).