The Food and Drug Administration on Monday approved Guardant Health’s blood test, called Shield, to screen for colon cancer. The test isn't meant to replace colonoscopies, but is generating enthusiasm ...

PSA stands for prostate-specific antigen, a substance naturally produced in prostate tissue. A small amount of PSA regularly sneaks into the bloodstream, and low blood concentration is considered ...

The U.S. Food and Drug Administration on Monday morning approved a blood test to screen for colorectal cancer in certain individuals. The blood test, known as Shield and manufactured by Guardant ...

The first blood test to screen for colorectal cancer could be approved this year — raising the potential to drastically increase the number of people diagnosed with the second-highest cause of cancer ...