Tag: hair analysis

Hair testing

Ask the experts: Effects of hair treatments on drug test results

April 6, 2021 By

Our scientific expert, Dr. Barry Sample, answers the question: Can products and treatments affect hair drug test results?

Hair testing

Common questions about hair testing

March 9, 2021 By

An expert from Quest Diagnostics answers some of the most common questions about hair drug testing.

Hair testing

Quest comments for hair specimen mandatory guidelines

August 5, 2015 By

HHS published an RFI seeking comments for federally-mandated hair drug testing. Here are our comments in response to the questions posed by HHS.

Hair testing

Request for hair drug testing information

May 29, 2015 By

The HHS published an RFI seeking comments on regulatory policies and standards regarding the use of hair specimen for federally-mandated drug testing.

Hair testing

Detect repetitive drug use with hair testing

February 12, 2015 By

Hair testing is a method many employers rely on to help identify periodic and habitual drug use by applicants and employees.

Hair testing

Ask the experts: Hair testing vs. hair follicle testing

July 3, 2014 By

We asked our scientific expert to better understand hair testing terminology and the hair testing collection process.

Hair testing

See our hair drug testing lab in action

May 15, 2013 By

We are proud of our hair testing laboratory and the contribution we make to help keep the workplace safe.

Hair testing

Hair testing 101: Combing through the science

May 6, 2013 By

Hair drug testing is the only method that provides up to a 90-day drug use history. View our webinar, “Hair Testing 101: Combing through the Science.”

Hair testing

Hair drug testing resources

January 21, 2013 By

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