--- title: "DOT Urine Drug Test: What It Screens For | AMH Nationwide" description: "DOT urine drug test what it screens includes federally mandated substances under 49 CFR Part 40. Learn about panel sizes and detection. Call (877) 731-6362." author: "AMH Nationwide" date: "2026-08-27" tags: ["dot urine drug test what it screens"] canonical: "https://amhnationwide.com/dot-urine-drug-test-what-it-screens/" last_updated: "2026-08-27" --- # DOT Urine Drug Test: What It Screens For | AMH Nationwide **By AMH Nationwide** | August 27, 2026 DOT urine drug test what it screens includes federally mandated substances under 49 CFR Part 40. Learn about panel sizes and detection. Call (877) 731-6362. --- DOT urine drug test what it screens covers specific federally mandated substances required for safety-sensitive transportation roles. This includes a standard 5-panel or expanded 7 or 10-panel urine screen following 49 CFR Part 40 protocols. Panel size determines the number of drugs detected. Call (877) 731-6362. OVERVIEW ## What substances does a DOT urine drug test screen for? A DOT [urine](https://amhnationwide.com/urine-drug-testing/) drug test screens for federally mandated substances as specified in [49 CFR Part 40](https://www.transportation.gov/odapc/part40) to ensure safety in transportation roles. The standard 5-panel test includes Marijuana (THC), Cocaine, Amphetamines, Opiates, and Phencyclidine (PCP). Expanded panels, such as 7-panel or 10-panel, include additional substances like synthetic opioids or benzodiazepines, but all testing follows strict federal urine specimen collection protocols. PANEL SIZES ## How does the panel size affect what is detected in a DOT urine drug test? The panel size determines the number and type of substances screened in the DOT urine drug test. The mandatory federal 5-panel includes the core substances required for DOT compliance. Employers or regulatory bodies may request expanded panels to detect additional drugs beyond the federal minimum, but the DOT urine test itself must always include the 5-panel substances. 5-Panel: Marijuana, Cocaine, Amphetamines, Opiates, PCP 7-Panel: 5-Panel + additional opioids (e.g., Oxycodone, Hydrocodone) 10-Panel: 7-Panel + Benzodiazepines, Barbiturates, Methadone, Propoxyphene LAB NETWORKS ## Which labs process DOT urine drug tests for AMH Nationwide? AMH Nationwide routes DOT urine drug test specimens 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. Each lab follows the federally certified urine testing protocol under 49 CFR Part 40, ensuring chain of custody and specimen integrity for safety-sensitive roles. PROCESS ## What is the collection process for a DOT urine drug test? DOT urine drug test collections are conducted at authorized collection sites following strict federal guidelines to maintain specimen integrity and prevent tampering. AMH Nationwide provides the lab order and directs the requester to a nearby collection site. Online ordering is not available. Every non-negative result undergoes review by a certified Medical Review Officer (MRO). ## Need a DOT Urine Drug Test Panel? Contact AMH Nationwide to arrange federally compliant DOT urine drug testing. Call (877) 731-6362 for guidance and lab site information. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) [DETECTION WINDOW](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) ## What is the detection window for substances in a DOT urine drug test? The detection window varies by substance but generally covers recent use within several days to a week prior to collection. Urine testing detects metabolites of drugs, making it effective for identifying recent drug use in safety-sensitive positions. REGULATORY ## What regulations govern the DOT urine drug test panels and procedures? The DOT urine drug test is governed by 49 CFR Part 40, which mandates the substances screened, collection procedures, laboratory certifications, and result review. This regulation ensures uniform testing standards for safety-sensitive transportation employees across the United States. 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 Standard DOT 5-panel urine drug tests do not detect synthetic opioids. Expanded panels like the 7-panel may include synthetic opioids such as oxycodone and hydrocodone if requested. No, DOT drug testing requires federally certified urine testing under 49 CFR Part 40. Hair testing is not accepted for DOT safety-sensitive roles. All non-negative results are reviewed by a certified Medical Review Officer who evaluates the findings and may contact the employee for medical explanations. AMH Nationwide provides the lab order and directs requesters to authorized collection sites but does not perform collections directly. No, AMH Nationwide does not offer online ordering. You must call (877) 731-6362 to initiate the process and receive lab site directions. Turnaround time varies by lab and panel size but typically ranges from 24 to 72 hours after specimen collection and receipt by the lab. 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/dot-urine-drug-test-what-it-screens/