--- title: "Who does hair follicle drug test" description: "Who does hair follicle drug test? Employers, courts, and probation order these tests for long-term drug detection. Call (877) 731-6362 for details." author: "AMH Nationwide" date: "2026-08-28" tags: ["who does hair follicle drug test", "who does hair follicle drug test | who does hair follicle drug testing | who does a hair follicle drug test"] canonical: "https://amhnationwide.com/who-does-hair-follicle-drug-test/" last_updated: "2026-08-28" --- # Who does hair follicle drug test **By AMH Nationwide** | August 28, 2026 Who does hair follicle drug test? Employers, courts, and probation order these tests for long-term drug detection. Call (877) 731-6362 for details. --- Who does hair follicle drug test? Employers, courts, probation officers, and individuals order hair follicle drug testing to detect drug use over a 90-day window. AMH Nationwide coordinates collection through five national lab networks with certified Medical Review Officer oversight. Call (877) 731-6362. TESTERS ## Who does a hair follicle drug test? Hair follicle drug testing is typically ordered by employers for [pre-employment](https://amhnationwide.com/pre-employment-hair-testing/) screening, random testing, or post-incident investigations. Courts and [probation](https://amhnationwide.com/hair-follicle-drug-test-probation/) agencies also use these tests to monitor compliance with drug-free mandates. Additionally, some individuals seek hair follicle drug testing for personal reasons such as legal cases or verifying abstinence. AMH Nationwide facilitates these tests by providing lab orders and directing clients to one of 20,000+ nationwide collection sites. Tests are processed through five national lab networks: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, and ExperTox. PURPOSE ## Why do employers choose hair follicle drug testing? Employers use hair follicle drug testing because it detects drug use over a longer period than [urine](https://amhnationwide.com/urine-drug-testing/) or saliva tests, typically up to 90 days. This makes it effective for identifying patterns of drug use rather than recent or one-time use. Hair follicle testing is non-invasive and difficult to adulterate, providing reliable results that help maintain workplace safety and compliance with company policies. [Detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/): up to 90 days Non-invasive collection Difficult to tamper with Used for pre-employment and random testing LAB PROCESS ## Who does hair follicle drug testing in the lab? Hair follicle samples collected through AMH Nationwide are sent to one of five national lab networks for analysis: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox. Each lab follows strict chain-of-custody protocols and uses scientifically validated methods. Every non-negative result is reviewed by a certified Medical Review Officer (MRO) to ensure accuracy and proper interpretation before reports are released to the requester. LEGAL & DOT ## Who does a hair follicle drug test for DOT-regulated employees? The U.S. Department of Transportation (DOT) does not approve hair follicle drug testing for safety-sensitive positions. Instead, DOT regulations require federally certified urine testing under [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair follicle drug tests are used for non-DOT roles where employers want a longer detection window. AMH Nationwide complies with all relevant regulations and directs clients accordingly. ## Schedule Your Hair Follicle Drug Test Today Call (877) 731-6362 to arrange hair follicle drug testing with AMH Nationwide. Access thousands of collection sites nationwide and expert lab processing with Medical Review Officer oversight. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) RELIABILITY ## Can hair follicle drug tests detect passive exposure or one-time use? Hair follicle drug tests detect drugs incorporated into the hair shaft from bloodstream exposure, typically reflecting consistent use rather than one-time or passive exposure. Occasional or environmental contact is unlikely to produce a positive result. The testing labs use sensitive and specific methods to distinguish between legitimate drug use and external contamination, ensuring reliable outcomes. ORDERING ## How do I get a hair follicle drug test through AMH Nationwide? AMH Nationwide provides the lab order and directs you to a nearby collection site. There is no option for online ordering. To initiate testing, call (877) 731-6362 to speak with a representative who will guide you through the process. Pricing varies depending on the test panel and detection window. Contact AMH for a detailed quote and scheduling information. AMH Reviewed & Maintained By AMH Nationwide Customer Service AMH Nationwide is BBB A+ accredited and routes every order through Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox, all of which use multiple lab certification agencies and standards such as [SAMHSA](https://www.samhsa.gov/workplace/drug-testing)-aligned laboratory protocols, the ANSI National Accreditation Board for forensic testing and calibration, the College of American Pathologists (CAP), and Clinical Laboratory Improvement Amendments (CLIA). Every non-negative screen is reviewed by a certified Medical Review Officer as part of standard processing before a result is released, and chain-of-custody documentation is maintained on every collection. This page does not constitute medical or legal advice. **Last updated:** July 2026 You May Also Need [Nail Drug TestingNo head or body hair available? A 5-panel fingernail test covers a similar look-back window.Learn more →](https://amhnationwide.com/5-panel-fingernail-drug-test/)[ChildGuard: Environmental ExposureConcerned about a child or loved one? ChildGuard screens for exposure to drugs in their environment.Learn more →](https://amhnationwide.com/5-panel-hair-drug-test-environmental-exposure-childguard/)[Shorten the Detection WindowShortened options like 30 and 60 day hair panels are also available, useful when a urine test’s 1-3 day window is too short.Learn more →](https://amhnationwide.com/30-day-hair-drug-test/)[Hair ETG Alcohol TestAlso need alcohol testing? The hair ETG test screens for alcohol use, and can be added to the same collection.Learn more →](https://amhnationwide.com/etg-and-peth/) Frequently Asked Questions ## Common Questions Employers, courts, probation officers, and individuals order hair follicle drug tests to detect drug use over an extended period. This test is favored for its long detection window and reliability. Hair follicle drug tests detect drug use up to 90 days prior to collection, making them suitable for identifying long-term patterns rather than recent use. No. DOT regulations require urine testing under 49 CFR Part 40. Hair follicle testing is used only for non-DOT roles. Passive exposure rarely causes a positive hair follicle drug test. The labs use methods to distinguish external contamination from actual drug ingestion. All non-negative results undergo review by a certified Medical Review Officer who verifies accuracy and interprets findings before releasing reports. Call (877) 731-6362 to receive a lab order and be directed to a nearby collection site. AMH does not offer online ordering. Sources • [SAMHSA – Mandatory Guidelines for Federal Workplace Drug Testing Programs](https://www.samhsa.gov/workplace/drug-testing) • [U.S. DOT – 49 CFR Part 40 – Procedures for Transportation Workplace Drug and Alcohol Testing Programs](https://www.transportation.gov/odapc/part40) • [CDC – National Center for Health Statistics – Drug Use FastStats](https://www.cdc.gov/nchs/fastats/drug-use.htm) • [Quest Diagnostics – Employer Solutions, Hair Testing Methodology](https://www.questdiagnostics.com/) • [LabCorp – Occupational Testing Services](https://www.labcorp.com/) ## Ready to get started? AMH Nationwide provides the lab order and arranges collection nationwide. Every non-negative result reviewed by a certified Medical Review Officer. Call (877) 731-6362 or contact us. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) --- **Need a drug, alcohol, HIV or STD test?** AMH Nationwide is a national lab testing agency operating since 2004, with more than 20,000 collection sites across the United States. Hair, urine, fingernail and blood testing, panels from 5 through 19, for individuals and employers. - Call: (877) 731-6377 - Find a collection site: https://amhnationwide.com/locations/ - Full page: https://amhnationwide.com/who-does-hair-follicle-drug-test/