Contact

At DLO, we are happy to provide 24/7 customer support to patients and health care professionals across the state. Whether you’re a patient with questions about a bill or invoice, or a health care professional needing clarification on a test or specimen requirements, we always have someone available to assist you.

Click here for Patient Service Center locations

FOR PATIENTS

General Inquiries:
Oklahoma City: (405) 608-6100
Tulsa: (918) 294-5300
Toll Free: 1 (800) 891-2917

Billing Questions:
1 (888) 241-7742
Email Billing Customer Service

MyQuest Support
myquestsupport@questdiagnostics.com

FOR HEALTH CARE PROFESSIONALS

Client Services & General Inquiries:
Oklahoma City: (405) 608-6100, Option 2
Tulsa: (918) 294-5300, Option 2
Toll Free: 1 (800) 891-2917, Option 2

Specimen Pick Up:
Oklahoma City: (405) 608-6100, Option 3
Tulsa: (918) 294-5300, Option 3
Toll Free: 1 (800) 891-2917, Option 3

Client Billing:
1 (888) 321-0155

IT Support Help Desk:
1 (800) 697-9302

Supplies:
Oklahoma City: (405) 608-6100, Option 4
Tulsa: (918) 294-5300, Option 4
Toll Free: 1 (800) 891-2917, Option 4

Download Supply Request Form

Sales:
Oklahoma City: (405) 608-6100, Option 5
Tulsa: (918) 294-5300, Option 5
Toll Free: 1 (800) 891-2917, Option 5

Diagnostic Laboratory of Oklahoma **
225 NE 97th St.
Oklahoma City, OK 73114

** This location is our company headquarters and is NOT a draw site. Please visit our Patient Service Center Locations page to find the draw site nearest to you.

Send a Message to DLO

Are you a patient with a question regarding a DLO bill or invoice? Send a message to the DLO patient billing department by clicking the link below:

Email Billing Customer Service*

If your question does not relate to patient billing, please use the form below to submit a message to DLO. We greatly value the voice of our patients and health care providers.