Tag: specimen validity testing

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

Excuses for positive drug tests
The most common excuses for why people fail drug tests include claims about second-hand smoke or accidental consumption. Arm yourself with knowledge to deter cheating. Continue reading

By   /  August 1, 2018

Combating cheating in urine drug testing
Employers need a variety of tools at their disposal to help thwart drug test cheaters as they work to maintain drug-free workplaces. Continue reading

By   /  July 18, 2016

Add certainty with specimen validity testing
Quest Diagnostics offers specimen validity testing with varying levels of quality assurance to help ensure the integrity of a urine drug test. Continue reading

By   /  December 18, 2015

How donors cheat drug tests
The use of oxidizing adulterants is one of the most common ways donors try to cheat a urine drug test. Our chart shows different kinds of adulterants. Continue reading

By   /  December 16, 2015

Quest comments for oral fluid mandatory guidelines
HHS published Oral Fluid Mandatory Guidelines which opened a 60-day comment period. Here are our comments in response to the questions posed by HHS. Continue reading

By   /  August 3, 2015

New to drug testing: Specimen validity testing
Collectors keep donors from contaminating specimen, but also take measures at the laboratory to help ensure that your test results are accurate. Continue reading

By   /  February 14, 2014

Adulterant testing using TestSure™
Adulterants, specimen validity, diagnostic testing, drug screening Continue reading

By   /  September 12, 2011

Thwarting drug test cheaters
Employers must do everything possible to prevent drug-abusing workers and job applicants from successfully altering test results. Continue reading

By   /  January 4, 2011