Quest Diagnostics Newsroom Quest diagnostics offers a comprehensive menu of routine and specialty laboratory tests and services. With the consolidated capabilities of our regional laboratories, expanding international presence and the additional esoteric capabilities of Nichols Institute, we are able to offer unequaled convenience in utilizing one laboratory for all diagnostic and prognostic clinical testing needs. Quest Diagnostics Declares Quarterly Cash Dividend Tue, 16 May 2017 11:10:00 -0400 Increases in Illicit Drugs, Including Cocaine, Drive Workforce Drug Positivity to Highest Rate in 12 Years, Quest Diagnostics Analysis Finds Cocaine, marijuana and methamphetamine use up broadly among United States workforce across multiple specimen types and testing populations Tue, 16 May 2017 09:05:00 -0400 Quest Diagnostics To Speak At The UBS Global Healthcare Conference Fri, 12 May 2017 15:21:00 -0400 Quest Diagnostics To Speak At The Deutsche Bank 42nd Annual Health Care Conference Tue, 02 May 2017 17:38:00 -0400 Quest Diagnostics and PeaceHealth Complete Transaction to Increase Access to Innovative, High-value Diagnostic Information Services in the Pacific Northwest Quest completes acquisition of PeaceHealth Laboratories' outreach lab services operation Mon, 01 May 2017 14:00:00 -0400