Testing Locations » Maryland » Glen Burnie MD » Quest Diagnostics – Oakwood Road – Employer Drug Testing Not Offered Quest Diagnostics – Oakwood Road – Employer Drug Testing Not Offered Quest Diagnostics – Oakwood Road – Employer Drug Testing Not Offered7845 Oakwood RoadSuite 304Glen Burnie, MD 21061-4266 United States Located near Rt. 100 and across from Royal Farm Store.