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 questhealth™ in Oklahoma

DLO is proud to offer questhealth where you can purchase your own lab tests without a doctor's visit. The menu includes testing for:

  • COVID-19
  • General health and wellness
  • Colorectal cancer screening
  • Food and respiratory allergies
  • Digestive health
  • Drug screens
  • Heart health
  • Infectious disease and immunology
  • Sexually-transmitted diseases

Visit Homepage | Medical and Lab Tests | Quest Health  to learn more.

BlueCross BlueShield of OklahomaUnitedHealthcareDLO is a preferred lab network provider with all UnitedHealthcare plans and is in-network with all BlueCross BlueShield 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.