Tag: hair collections

Hair testing

Ask the experts: Can hair testing detect one-time drug use?

May 14, 2019 By

Employers who look for solutions to detect one-time drug use often ask if hair testing may be a viable option. We help to provide insight.

News

USA today runs DTI article

November 20, 2009 By

On November 20, 2009, Quest Diagnostics published our first Drug Testing Index TM with hair testing data.