Oklahoma's premier diagnostic laboratory 

Diagnostic Laboratory of Oklahoma (DLO) is the leading diagnostic lab in Oklahoma, offering more than 50 patient access points for convenient access to urban and rural patients, while serving more than 3,500 physicians and more than 75 hospitals across the state. DLO's mission is to provide innovative, timely, and quality medical laboratory services to our clients and their patients.


DLO now offers direct access testing for patients

Through a new program called DLO Direct, DLO now provides self-directed testing that gives our customers the ability to order select lab tests without a healthcare provider. For more information and a complete list of available tests, visit DLODirect.com.


DLO named to "Best Places to Work" in Oklahoma for 12 years in a row

Oklahoma City, Okla. - Diagnostic Laboratory of Oklahoma (DLO) has been named to the 2017 Best Places to Work in Oklahoma program by The Journal Record, which identifies and honors the state’s best employers. This is the 12th consecutive year that DLO has been selected as a finalist for this annual award. DLO ranked fourth overall in 2016 in the large company category. Read more...


BlueCross BlueShield of OklahomaDLO is an in-network provider with most Blue Cross Blue Shield of Oklahoma plans statewide. See our Insurance List page to see a detailed list of DLO's preferred and in-network health plans. A full list of DLO Patient Service Centers can be found in Locations. For additional information, please visit DLO’s Patient Frequently Asked Questions.