PALO ALTO, Calif.--(BUSINESS WIRE)--Guardant Health, Inc. (Nasdaq: GH), a leading precision oncology company, today announced a multi-year collaboration with Merck, known as MSD outside the United States and Canada, to support the development and commercialization of Merck's oncology portfolio using the Guardant Infinityâ"¢ Smart platform. Use Guardant's portfolio of liquid and tissue biopsy tests as clinical trial enrolling assays in Merck's global clinical studies, Evaluate opportunities to develop novel ...