An ionized calcium test measures the levels of a specific form of calcium in your blood. It’s performed by taking a small blood sample. You’ll typically need to fast before the test. Calcium ...

Dr. David Spetzler (Courtesy: Caris Life Sciences) “Having a simple blood test that allows us to identify whether somebody has cancer is revolutionary,” says Dr. David Spetzler, President and ...

When Will I Die? Scientists Develop New Blood Test That Could Reveal Life Expectancy. Published Jul 09, 2018 at 8:51 AM EDT Updated Jul 09, 2018 at 9:55 AM EDT.

To do that, researchers used a blood test to find mutations in cancer cells that let the tumors defy standard treatments. Early detection allowed patients to be switched to a different drug that ...