--- title: "Is a dot drug test urine or hair" description: "Is a DOT drug test urine or hair? DOT drug tests use urine samples with strict federal protocols. Learn more and schedule testing. Call (877) 731-6362." author: "AMH Nationwide" date: "2026-08-28" tags: ["is a dot drug test urine or hair"] canonical: "https://amhnationwide.com/is-a-dot-drug-test-urine-or-hair/" last_updated: "2026-08-28" --- # Is a dot drug test urine or hair **By AMH Nationwide** | August 28, 2026 Is a DOT drug test urine or hair? DOT drug tests use urine samples with strict federal protocols. Learn more and schedule testing. Call (877) 731-6362. --- Is a DOT drug test urine or hair? DOT drug tests use urine specimens exclusively following federally certified protocols under 49 CFR Part 40. Hair testing is not accepted for DOT safety-sensitive roles. AMH Nationwide coordinates collection at authorized labs with results reviewed by certified Medical Review Officers. Call (877) 731-6362. DOT Testing Basics ## Is a DOT drug test urine or hair? A DOT drug test is [urine](https://amhnationwide.com/urine-drug-testing/)-based. The Department of Transportation requires urine specimens collected under strict federal guidelines specified in [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair samples are not permitted for DOT-mandated safety-sensitive employee testing. The urine test screens for drugs such as marijuana, cocaine, amphetamines, opioids, and PCP. This specimen type is chosen for its reliability, [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/), and regulatory acceptance. Collection Process ## How is the urine sample collected for a DOT drug test? Urine collection for DOT tests follows a federally certified protocol to ensure chain of custody and specimen integrity. The process includes direct observation or monitored collection under specific circumstances. AMH Nationwide directs requesters to one of five national lab networks for collection: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, or ExperTox. No online ordering is available; scheduling requires calling (877) 731-6362. Why Not Hair Testing? ## Why is hair testing not used for DOT drug tests? Hair testing is not accepted for DOT safety-sensitive positions because it is not included in the federal regulations governing DOT drug testing. The urine test’s detection window and standardized procedures better align with DOT’s requirements. Hair tests have a longer detection window but are more susceptible to external contamination and do not meet the federally mandated protocols for these roles. Detection Windows ## What is the detection window for a DOT urine drug test? DOT urine drug tests typically detect drug use within the past 1 to 3 days, depending on the substance. Some metabolites may be detectable for slightly longer periods but are generally limited to recent use. This detection window supports the safety-sensitive nature of DOT-regulated work by identifying recent impairment or drug use. Marijuana: up to 3 days for occasional use Cocaine: 2 to 4 days Amphetamines: 1 to 3 days Opiates: 2 to 3 days PCP: up to 8 days ## Schedule Your DOT Urine Drug Test Today Contact AMH Nationwide to arrange a DOT-compliant urine drug test at one of our nationwide collection sites. Results are reviewed by certified Medical Review Officers. Call (877) 731-6362 to get started. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) Result Review ## How are DOT drug test results reviewed and reported? All non-negative DOT urine drug test results are reviewed by a certified Medical Review Officer (MRO). The MRO evaluates the lab findings alongside medical history or prescriptions before releasing a final report. This medical review step ensures accuracy and fairness in the reporting process, protecting both employers and employees. Who Orders DOT Tests? ## Who typically orders DOT urine drug tests and why? Employers in safety-sensitive transportation industries, such as trucking, aviation, railroads, and mass transit, order DOT urine drug tests to comply with federal regulations. Court systems, [probation](https://amhnationwide.com/hair-follicle-drug-test-probation/) departments, and some individual requesters may also require DOT-compliant urine testing to meet legal or regulatory standards. Pricing and Scheduling ## How much does a DOT urine drug test cost and how do I schedule one? Pricing for DOT urine drug tests varies depending on the testing panel and detection window required. AMH Nationwide does not provide online ordering or pricing but offers quotes by phone. To schedule a DOT urine drug test or request pricing information, call (877) 731-6362. AMH will direct you to a nearby collection site within the national lab networks. 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, DOT regulations require urine specimens for drug testing in safety-sensitive positions. Hair samples are not accepted for DOT drug tests. DOT urine drug tests screen for marijuana, cocaine, amphetamines, opiates, and PCP, using federally certified laboratory methods. Yes, urine collection under DOT protocols includes monitored or directly observed collection to maintain specimen integrity and chain of custody. A certified Medical Review Officer reviews all non-negative results to confirm accuracy and consider medical explanations before final reporting. Results typically take a few days after collection, depending on lab processing times and MRO review. Individuals can request DOT drug testing through AMH Nationwide but must call to arrange testing; there is no 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/is-a-dot-drug-test-urine-or-hair/