PALO ALTO, Calif.--(BUSINESS WIRE)--Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced its ShieldTM blood test for colorectal cancer screening (CRC) is now covered for eligible UnitedHealth Group (UHG) members1, making it the first major commercial insurer to provide coverage for adults 45 or older amid rising CRC rates for adults under 652 and mortality for younger adults as the leading cause of cancer death for those under 50.3 Shield is the first and onl