Tag: urine drug testing


Challenging the poppy seed defense

October 16, 2015 By

A new Quest Diagnostics study helps to answer the question: Can eating poppy seeds produce a positive drug test for a job applicant or employee?


Find an Express Results™ Online collection site

May 1, 2015 By

Looking for location? Our interactive online map displays the collection sites where Express Results Online instant drug testing is currently offered.