Customer support

Quest Diagnostics

Customer support

By choosing Quest Diagnostics Employer Solutions, you will work with a team dedicated to service. Our staff is skilled, knowledgeable, accessible, and committed to quality. You can count on the broad breadth of our experience and resources and we are never more than a click or phone call away.

Customer support for Quest Diagnostics drug testing clients

For donors

(individuals who are asked to take a drug test)

What to expect at a drug test.

Locate a location/collection site for a drug test. 

Please note that Quest Diagnostics is not able to provide a result to anyone other than the party who ordered the drug test. Please contact the organization that requested you to take a drug test to receive further information on the status of your test and the final result.

For clients

   Inquire about a drug test specimen status

   Locate a location/collection site.

   Drug testing results, order a test, or reset your password:

   Quest Integrated Systems (QIS).

   Employer Solutions Portal (ESP).

   Request a password reset. 

   Billing inquiries:

   1.800.345.2455

   Available Monday-Friday 9 a.m. - 4:30 p.m. ET

   Pay online or submit billing disputes

   Courier pickup:

   1.866.697.8378 - Options 1 & 6

   (Dial locally from the pickup site. Calls are routed by the area code)

   Drug testing resources and information:   

   Drug testing knowledge center.

   Lab questions and requests for CCF copies.

   (Include the specimen ID # and accession #)

   Locate a location/collection site for a drug test.

   Make a change to your account

   Order supplies or requisition forms:

  • Place an order using your SmartWorks® account
  • Order supplies or requisition forms online
  • Order supplies or requisition forms via email
  • Call in your supplies order: 1.800.877.7484 - Options 3 & 1
  • Fax your order: 1.267.436.3541
  • International testing requests and supplies 

   Specimen updates & questions by lab location:

Collection sites

   Locate a location/collection site.

   Request an on-site collection.


   Speak to a customer support representative:
   Monday - Friday, 7 AM - 7 PM CT
   1.800.877.7484

   Request more information about drug testing.