Quest Diagnostics Newsroom - Features 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. <a href="" TARGET="new">Quest for success: Company continues to modernize as it begins its next 50 years</a> <a href="" TARGET="new"></a> <a href="">Global Inclusion & Corporate Social Responsibility Report</a>