Tag: specimen validity testing

Urine testing

3 Ways Cheaters Cheat

August 13, 2019 By

A drug testing program is only as good as its safeguards. Learn some of the most common ways people try to cheat a drug test and how to stop the cheaters.

Urine testing

A closer look: specimen validity testing

March 12, 2019 By

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

Blog Series

A Closer Look: Series introduction

February 8, 2019 By

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

Urine testing

Add certainty with specimen validity testing

December 18, 2015 By

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

Urine testing

How donors cheat drug tests

December 16, 2015 By

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.

Oral Fluid testing

Quest comments for oral fluid mandatory guidelines

August 3, 2015 By

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.

New to Drug Testing

New to drug testing: Specimen validity testing

February 14, 2014 By

Collectors keep donors from contaminating specimen, but also take measures at the laboratory to help ensure that your test results are accurate.

Urine testing

Adulterant testing using TestSure

September 12, 2011 By

To help ensure the integrity of urine drug tests, it’s important to perform specimen validity testing.