--- title: "Does crst do hair follicle test" description: "Does CRST do hair follicle test? Learn how hair drug testing works and what to expect. For accurate testing, call (877) 731-6362." author: "AMH Nationwide" date: "2026-08-28" tags: ["does crst do hair follicle test", "does crst do hair follicle test | does crst hair test | does crst do hair test | does crst do hair follicle drug test"] canonical: "https://amhnationwide.com/does-crst-do-hair-follicle-test/" last_updated: "2026-08-28" --- # Does crst do hair follicle test **By AMH Nationwide** | August 28, 2026 Does CRST do hair follicle test? Learn how hair drug testing works and what to expect. For accurate testing, call (877) 731-6362. --- Does CRST do hair follicle test? CRST does not publicly specify hair follicle drug testing services. Hair follicle tests detect drug use over a 90-day period and require certified lab processing. AMH Nationwide partners with five national labs including Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, and ExperTox for hair testing. Call (877) 731-6362 for details. SERVICE CLARITY ## Does CRST Do Hair Follicle Drug Testing? CRST does not explicitly advertise hair follicle drug testing as part of its standard drug testing services. While CRST provides various drug and alcohol testing options, hair follicle testing is typically arranged through specialized testing providers or labs. Hair follicle testing requires collection and analysis protocols that are often handled by accredited laboratories. AMH Nationwide coordinates hair follicle drug testing through five national lab networks, ensuring certified processing and Medical Review Officer oversight. TEST TYPES ## What Is Hair Follicle Drug Testing and How Does It Work? Hair follicle drug testing detects drug metabolites deposited in the hair shaft, reflecting drug use over approximately 90 days. This method provides a longer [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) compared to [urine](https://amhnationwide.com/urine-drug-testing/) or saliva tests. The test requires a small hair sample, usually from the scalp, which is sent to a certified lab. The labs AMH partners with include [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, and ExperTox. Detection window: up to 90 days Sample: 1.5 inches of scalp hair Drugs detected: multiple classes including opioids, cocaine, amphetamines, cannabis, and PCP Processing: certified labs with Medical Review Officer review ORDERING PROCESS ## Can You Order a Hair Follicle Test Directly Through CRST? CRST does not offer direct ordering or collection for hair follicle tests to the public. Instead, testing is generally ordered through employers, courts, or other authorized requesters. AMH Nationwide provides lab orders and directs clients to one of over 20,000 nationwide collection sites. There is no online ordering for hair follicle tests; all arrangements require contacting a representative by phone at (877) 731-6362. TEST ACCURACY ## How Reliable Is Hair Follicle Testing Compared to Other Drug Tests? Hair follicle testing is highly reliable for detecting drug use over an extended period. It is less susceptible to short-term abstinence or masking attempts compared to urine tests. Every non-negative hair test is reviewed by a certified Medical Review Officer to confirm accuracy and evaluate any legitimate explanations for positive results. Long detection window reduces chance of missed use Lab accreditation ensures testing standards Medical Review Officer provides expert oversight ## Need Hair Follicle Drug Testing? Contact AMH Nationwide to arrange hair follicle testing with certified labs and Medical Review Officer oversight. Call (877) 731-6362 for assistance. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) DOT TESTING ## Does CRST Use Hair Follicle Tests for DOT-Regulated Employees? For DOT-regulated safety-sensitive positions, the Department of Transportation mandates federally certified urine testing under [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair follicle tests are not accepted for DOT compliance. Hair testing by AMH Nationwide is reserved for non-DOT roles or other screening purposes where longer detection windows are required. PRICING ## How Much Does Hair Follicle Drug Testing Cost Through AMH Nationwide? Pricing for hair follicle drug testing varies depending on the drug panel and detection window selected. Costs are influenced by the specific lab network used and the nature of the test. For an accurate quote and to arrange testing, call (877) 731-6362. AMH Nationwide does not offer online pricing or ordering. 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 CRST does not publicly list hair follicle drug testing as part of its employment screening services. Employers typically use specialized labs for hair testing. Yes, hair follicle tests detect drug use up to 90 days prior, while urine tests usually detect recent use within days. No, DOT regulations require federally certified urine testing under 49 CFR Part 40. Hair tests are not accepted for DOT safety-sensitive roles. A small sample of hair about 1.5 inches long is cut close to the scalp, typically from the crown or back of the head. Yes, all non-negative hair test results are reviewed by a certified Medical Review Officer to verify accuracy and interpret findings. You must call (877) 731-6362 to arrange testing. AMH provides lab orders and directs you to a nearby collection site. 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/does-crst-do-hair-follicle-test/