Author: Humberto Gutierrez

A closer look: Random drug testing
Random drug testing can be a strong deterrent to drug use because it is conducted on an ongoing, unannounced basis; an employer selects one or more individuals for testing from all of the eligible employees in their testing program. Continue reading

By   /  October 4, 2019

A closer look: specimen validity testing
With the use of specimen validity testing (SVT), once a specimen arrives at our laboratory, we help ensure the integrity of each test. Continue reading

By   /  March 12, 2019

A Closer Look: Series introduction
A new year brings new beginnings. That said, we are excited to introduce our new blog series called A Closer Look. Continue reading

By   /  February 8, 2019

A Closer Look: Unit Codes and their purpose
Drug testing terminology is expansive and sometimes complex. For that reason we're providing clarity to one of the most commonly misused terms. Continue reading

By   /  December 14, 2018

Federal drug testing expanded opiate panel impacting positivity
The dangers associated with opioids misuse are likely elevated based on a testing population that includes drivers, pilots, and other safety-sensitive roles. Continue reading

By   /  September 13, 2018

Customer survey: taking action from insight
At Quest Diagnostics, we’re working hard to do things differently – and better. Continue reading

By   /  August 13, 2018