Testing Locations » Colorado » Parker CO » Quest Diagnostics – Parker Crown Crest – Employer Drug Testing Not Offered Quest Diagnostics – Parker Crown Crest – Employer Drug Testing Not Offered Quest Diagnostics – Parker Crown Crest – Employer Drug Testing Not Offered9397 Crown Crest BlvdSte 200Parker, CO 80138-8575 United States Located in the Parker Adventist Hospital Medical Office Building