A wealth of evidence suggests these tests are often unnecessary, costly, and can lead to adverse effects.

A new drug being tested for hypertrophic cardiomyopathy changed the structure of the heart in a new report from a clinical trial.

A longtime blood test that measures the likelihood of a cardiac event has become more sensitive and more precise. Why doctors and patients should be cautiously optimistic.

As supply problems for the key element loom, a study of a recent shortage suggests patients will be more likely to receive riskier and more expensive tests.