--- title: "How to get thc out of hair faster" description: "Learn how to get THC out of hair faster with facts from a certified lab. Understand detection windows and testing protocols. Call (877) 731-6362 for details." author: "AMH Nationwide" date: "2026-08-28" tags: ["how to get thc out of hair faster"] canonical: "https://amhnationwide.com/how-to-get-thc-out-of-hair-faster/" last_updated: "2026-08-28" --- # How to get thc out of hair faster **By AMH Nationwide** | August 28, 2026 Learn how to get THC out of hair faster with facts from a certified lab. Understand detection windows and testing protocols. Call (877) 731-6362 for details. --- How to get THC out of hair faster is a common question for those facing hair drug testing. THC metabolites bind to hair shafts and can be detected for up to 90 days. There is no scientifically proven way to speed up elimination from hair. For accurate testing and lab information, call (877) 731-6362. BASICS ## What is hair drug testing and how does it detect THC? Hair drug testing detects THC by analyzing hair samples for THC metabolites, primarily THC-COOH, which are deposited in hair follicles from the bloodstream. Since hair grows approximately 0.5 inches per month, testing typically examines a 1.5-inch segment representing about 90 days of drug use. The test is highly sensitive and can detect chronic or periodic cannabis use over this extended timeframe. [DETECTION WINDOW](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) ## How long does THC stay in hair and affect test results? THC metabolites can remain in hair for up to 90 days or longer, depending on hair length and growth rate. Because hair grows slowly, once THC is incorporated into the hair shaft it cannot be removed by washing or time over a short period. This detection window makes hair testing useful for identifying long-term cannabis use but not for recent or one-time use. MYTHS VS SCIENCE ## Can THC be removed or reduced in hair faster by treatments or products? No scientifically validated method exists to reliably remove or reduce THC in hair faster than natural hair growth. Many commercial shampoos and detox products claim to remove THC, but these claims lack scientific evidence and may not affect test results. Laboratories use sensitive testing methods that detect THC metabolites even after attempts to wash or treat hair. TESTING PROTOCOLS ## How do labs like AMH Nationwide handle hair THC testing? AMH Nationwide routes hair THC testing 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. All samples are screened and any non-negative results are reviewed by a certified Medical Review Officer to ensure accuracy and proper interpretation. Hair testing at AMH follows rigorous standards for sample collection, chain of custody, and analysis to provide reliable results. ## Need Accurate Hair THC Testing? Contact AMH Nationwide to schedule hair drug testing or to learn more about detection windows and protocols. Call (877) 731-6362. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) DOT REGULATIONS ## Is hair testing for THC accepted for DOT-regulated safety-sensitive positions? No. The Department of Transportation (DOT) requires federally certified [urine](https://amhnationwide.com/urine-drug-testing/) testing under [49 CFR Part 40](https://www.transportation.gov/odapc/part40) for safety-sensitive roles. Hair testing is not approved by DOT for these positions but may be used by employers for non-DOT regulated roles. AMH Nationwide provides hair testing services for non-DOT clients while adhering to all applicable regulations. ORDERING ## How can I get a hair THC test through AMH Nationwide? AMH Nationwide provides the lab order and directs the requester to one of 20,000+ nationwide collection sites for hair testing. There is no online ordering available; to arrange testing, you must call (877) 731-6362 to speak with a representative. Pricing varies depending on the test panel and detection window. Contact AMH for a quote and detailed 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 No. While some shampoos claim to remove THC, no method has been scientifically proven to eliminate THC metabolites from hair. Labs detect these metabolites despite washing or treatments. Hair testing can detect THC for up to 90 days or longer after use, depending on hair length. It reflects cumulative use, not recent or single exposures. No. Hair testing detects long-term cannabis use over months, while urine testing detects recent use within days to weeks. DOT requires urine testing for safety-sensitive jobs. Every non-negative hair THC test result is reviewed by a certified Medical Review Officer to confirm accuracy and provide interpretation. Passive exposure is unlikely to produce detectable THC metabolites in hair at levels that cause positive test results. Call (877) 731-6362 to get a lab order and be directed to a nearby collection site. There is no online ordering available. 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/how-to-get-thc-out-of-hair-faster/