What these buzzy new tests can and can't tell you.

A closely watched clinical trial in Britain that screened blood for early detection of cancer did not show a reduction in ...

Blood tests are helpful for monitoring your overall health. But research suggests they can also give us clues about the ...

A TB blood test can find out whether you have the Mycobacterium tuberculosis bacteria in your body. Whether you need to get tested and how often depends on your specific circumstances. A blood ...