Category: Hair testing

Hair testing

3,221 Drug users off the road thanks to hair testing

June 27, 2013

Positive results for drug use have kept more than 3,200 prospective drivers from getting behind the wheel for J.B. Hunt Transport Services Inc.


Truck drivers and hair drug testing

May 28, 2013

While DOT regulations mandate urine drug testing, a number of motor carriers have found value in performing supplemental hair testing.

Hair testing

Hair drug testing resources

January 21, 2013

Quest Diagnostics offers additional resources about hair testing for illicit drug use at

Hair testing

Trucking and hair testing

August 13, 2012

More trucking companies are electing to perform a hair drug test in addition to the urine test.

Hair testing

Hair testing from a leader in science and service

January 31, 2012

Hair testing provides up to a 90-day detection of repetitive drug use, which can act as a powerful drug use deterrent.

Hair testing

Hair testing advantages

August 9, 2010

There are a number of advantages that hair drug testing from Quest Diagnostics offers over alternative testing methods. See the benefits.

Hair testing

Product feature – Hair testing

April 28, 2010

Quest Diagnostics is committed to providing your company with a complete array of drug testing options.

Hair testing

Drug Testing Index with hair testing

November 20, 2009

New data released today by Quest Diagnostics Incorporated (NYSE: DGX), the nation's leading provider of employment-related drug testing services.