Valued at $20.6 billion by market cap, Secaucus, New Jersey-based Quest Diagnostics Incorporated (DGX) provides diagnostic testing services in the U.S. and internationally. The company develops and delivers diagnostic information services, such as routine, non-routine, and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. The healthcare major is gearing up to announce its third-quarter results before the market opens on Tuesday, Oct. 21. Ahead of the event, ...