Makers of medical tests that have long escaped government oversight will have about four years to show that their new offerings deliver accurate results, under a government rule vigorously opposed by ...

WASHINGTON — Makers of medical tests that have long escaped government oversight will have about four years to show that their new offerings deliver accurate results, under a government rule ...

If your cancer lab test isn’t valid, wrong results could mean you don’t get a drug that could save your life. Or it could mean you take a drug that won’t help you but will bombard you with side ...

A test for Parkinson’s that detects an abnormal protein in brain and spinal fluid is remarkably accurate, a new study found. In a first for Parkinson’s research, a large new study confirmed that a ...