Testing Locations » California » Westminster CA » Quest Diagnostics – Westminster Brookhurst – Employer Drug Testing Not Offered Quest Diagnostics – Westminster Brookhurst – Employer Drug Testing Not Offered Quest Diagnostics – Westminster Brookhurst – Employer Drug Testing Not Offered15355 Brookhurst StreetSuite 102-108Westminster, CA 92683-7077 United States Located at the Westminister Medical CenterrnQuantiferon draw site after 2:00pm only.