Skip to main content

FRAUD ALERT: PROTECT YOURSELF

A prepaid card to cover drug testing fees is generally an indication of a fraudulent employment scheme. Employers typically arrange and pay for testing directly. Please use caution and be vigilant.

Hide
Quest Diagnostics

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

Get started

To speak to a representative, please call 1.800.877.7484 or click below to complete our form

Contact us

Products and services

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2025 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.