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 ...

Are there other tests to diagnose the risk of coronary heart disease? A CAC test is useful if you’re at risk of coronary artery disease but show no symptoms. Other tests for coronary artery disease ...

DEAR DR ROACH: I am a 60-year-old female. I was diagnosed with primary biliary cholangitis (PBC) in 2020. At the time, I had a bone density scan that showed osteopenia of the left femoral neck with a ...

Small measurement uncertainties in clinical laboratory tests can add large amounts to health care costs, according to a newly released study commissioned by the National Institute of Standards and ...

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Sarah Freundlich folded her hands as she thought about the heart attack that never happened. "I started seeing the cardiologist several years ago because I had some heart palpitations," she said. "I ...