Quest Diagnostics: 34,000 customer accounts hacked FOX 29 Philadelphia U.S. Published December 13, 2016 12:41 PM EST Share Copy Link Email Facebook Twitter LinkedIn Reddit Published December 13, 2016 12:41 PM EST NEW YORK (WTXF/AP) - Medical laboratory operator Quest Diagnostics Inc. says a hack of an internet application on its network has exposed the personal health information of about 34,000 people.