PALO ALTO, Calif.--(BUSINESS WIRE)--Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced its Shield blood test for colorectal cancer screening (CRC) is now covered for active-duty service members and their families through TRICARE, the U.S. military's health insurance coverage, with no copay for average-risk individuals ages 45 and older. Shield is the first and only blood test approved by the FDA as a primary screening option for CRC, offering U.S. military. ...