Category: Ask the Experts

Staying compliant with new DOT regulations
New DOT regulations add four opioids: hydrocodone, oxycodone, hydromorphone, and oxymorphone to the test panel. Our experts answer your questions. Continue reading

By   /  November 29, 2017

Ask the Experts: Cheating an oral fluid drug test
Our experts explain why an observed oral fluid drug test collection is difficult to tamper or cheat. Continue reading

By   /  November 2, 2017

How to choose a drug testing laboratory
When selecting a drug testing laboratory, consider criteria such as accuracy, collections, technology, logistics, turnaround time, and customer support. Continue reading

By   /  October 30, 2017

Ask the Experts: Hair drug test specimens
Our experts explain how a hair drug test specimen can be taken from other parts of the body if someone is lacking hair or is bald. Continue reading

By   /  October 17, 2017

Ask the Experts: Hair drug test collections
How much hair is cut for a drug test? Our scientific experts explain the specific amount of hair needed by the laboratory for testing. Continue reading

By   /  August 4, 2017

Ask the Experts: Drug testing cutoffs
Employers should carefully select a drug test specimen type and cutoff level based on the desired window of detection and regulatory requirements. Continue reading

By   /  July 18, 2017

The case for maintaining a drug testing policy
West Virginia Supreme Court upholds reasonable suspicion termination demonstrating the impact of a comprehensive workplace drug testing policy. Continue reading

By   /  March 16, 2017

Ask the Experts: Six Sigma quality
At Quest Diagnostics, Six Sigma means striving for a standard of quality near perfection and championing total customer satisfaction. Continue reading

By   /  October 18, 2016

Ask the Experts: Drug test collection quality
We hold our collectors to the highest standards of quality by establishing chain of custody protocols, conducting audits, and reducing fatal flaws. Continue reading

By   /  September 30, 2016