A parathyroid hormone test measures levels of parathyroid hormone (PTH) in your body. This hormone is produced by small glands in your neck and regulates the level of calcium in your blood. A ...

An ionized calcium test measures the levels of a specific form of calcium in your blood. It’s performed by taking a small blood sample. You’ll typically need to fast before the test. Calcium is an ...

Heart disease has been the leading cause of death in the United States for more than 100 years, yet diagnoses continue to climb. A study by The American Heart Association found 51% of Americans were ...

Angela Ryan Lee, MD, FACC, is a board-certified cardiology and internal medicine physician. She also holds board certifications from the American Society of Nuclear Cardiology and the National Board ...

Coronary artery calcium scans can offer a more precise estimate of a patient’s chances for major cardiac events. Some cardiologists say it remains underused. By Paula Span A long list of Lynda ...

Dear Dr. Roach: I am an 81-year-old man (5 feet, 2 inches tall at 122 pounds) in good health, except that I have Type 2 diabetes. My A1C level has been in the range of 6.3% to 6.8% for the past five ...

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A Calcium Scoring CT (CAC) scan can detect early heart disease by measuring calcium buildup in arteries. Know what the test means, how it’s done, and when to take it. (Image: Pexels) A 35-year-old ...

For patients with chest pain who are at low risk of acute coronary syndromes, a coronary artery calcium (CAC) score of zero rules out CAD and the need for revascularization in the vast majority of ...