A bidirectional Mendelian randomization study finds no evidence that antibody responses to infections cause Graves' disease, ...

Learn what can cause an abnormal Pap smear, what a positive result means, and what next steps to take.

Nathan Fielder's new film about Theranos founder Elizabeth Holmes blurs the lines between reality and fiction. The film can ...

Many oxalate results come from tests that were not designed to guide treatment. Experts explain which ones need follow-up.

Mr. V felt tightness across his chest. His deepest breaths felt shallow. He sought help at an emergency department, where a resident physician found several worrying signs, including swelling of his ...

Biological age tests claim to inform you about how your body is faring by telling you what age your blood test results most ...

A sample of your blood can reveal much about your health. But it can be hard to know which blood tests are truly worth taking ...

Florida’s primary results were all over the map. But one especially ugly race says a lot about where the GOP is headed.