A self-administered radiation blood test would take some burden off medical systems after a nuclear attack or disaster.

Evaluating mild cognitive impairment, considered a precursor to dementia, by sex could potentially change who gets the diagnosis.

A new thyroid cancer test is fast and more accurate than the tests that doctors currently use, which can come back inconclusive 1 out of 5 times.

A new test can find opioids in a person's breath, which could catch illegal use and make sure patients are taking their medication correctly.

New technology could help doctors get earlier information on a cancer's agressiveness from the least invasive type of biopsy.

A future version of this medical monitoring scale could prevent long hospital stays for people with heart failure by allowing them to adjust medication at home.

A mail-in stool test kit every year or a colonoscopy every decade? Choices don't increase rates of colorectal cancer screening, research finds.

A new technique that isolates trophoblast cells—placental cells that carry the complete fetal genome—could offer an alternative to more invasive tests.

It only takes 10 particles of norovirus to cause seriously unpleasant digestive distress. Here's a new way to detect them.

Artificial intelligence could personalize eye exams to each patient, making standard eye charts a thing of the past.