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Due to the global information outage that occurred Friday, Quest is taking swift action to respond, recover and restore our operations. Our Patient Services are operating with reduced capacity so you may experience longer wait and service times. Our Customer Contact teams are currently unavailable. We appreciate your patience as we work toward returning to normal operations. 

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Hair drug testing

Hair testing continues to evolve


For employers who cannot compromise and are concerned about drug use in their workforce, now available with expanded opiate testing for Fentanyl and Methadone, hair testing is the right product to detect lifestyle use of drugs.
Our commitment the continuous improvement within our hair testing product helps to boost our workforce solutions, an evolution in testing made for industries looking for the longest window of drug detection. 
Learn more about hair drug screening.

Hair testing overview

Hair drug testing is the only testing method that provides up to a 90-day drug use history, an effective way to evaluate long-term patterns of use.

Why hair testing

Frequently asked questions

What is the difference between hair testing and hair follicle testing? How much hair is cut to perform a drug test? Can a donor cheat a hair drug test?

Read our FAQs

Hair testing collections

Locate a convenient hair testing collection site. A hair drug test only requires approximately 100-120 strands of hair for testing at the lab.

Collect a hair specimen