--- title: "Test drug test" description: "Test drug test options with certified lab accuracy and Medical Review Officer review. Know what to expect. Call (877) 731-6362 for details." author: "AMH Nationwide" date: "2026-08-28" tags: ["test drug test", "test drug test | thc drug test | drug urine test weed | weed drug test | what do pre employment drug test look for | urine drug test results explained | what is a drug screen | thc on drug screening | marijuana urine test | how do drug tests work"] canonical: "https://amhnationwide.com/test-drug-test/" last_updated: "2026-08-28" --- # Test drug test **By AMH Nationwide** | August 28, 2026 Test drug test options with certified lab accuracy and Medical Review Officer review. Know what to expect. Call (877) 731-6362 for details. --- A test drug test is a laboratory analysis used to detect the presence of drugs or their metabolites in biological samples, primarily urine. AMH Nationwide routes collections through five national lab networks ensuring certified Medical Review Officer review of non-negative results. Call (877) 731-6362 for scheduling and information. TEST BASICS ## What is a test drug test? A test drug test is a laboratory procedure that detects drugs or their metabolites in biological samples such as [urine](https://amhnationwide.com/urine-drug-testing/), hair, or oral fluid. The most common form is the urine drug test, which identifies recent drug use within a specific [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/). AMH Nationwide facilitates testing through five national lab networks, providing accurate results and certified Medical Review Officer review of any non-negative findings. Five national lab networks: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, ExperTox Specimen types: urine (most common), hair (for longer detection), oral fluid (less common) Certified Medical Review Officer reviews all non-negative test results No online ordering; testing arranged via phone at (877) 731-6362 Test drug tests are used by employers, courts, [probation](https://amhnationwide.com/hair-follicle-drug-test-probation/) officers, and individuals to monitor drug use reliably. The test type and detection window vary depending on the substances screened and the biological sample collected. DRUGS SCREENED ## What do pre employment drug test look for? Pre employment drug tests typically screen for a panel of commonly abused substances. The standard panel includes marijuana (THC), cocaine, opiates, amphetamines, and PCP. Expanded panels may include benzodiazepines, barbiturates, methadone, and synthetic opioids. AMH Nationwide’s labs follow federally certified protocols when required, such as the DOT urine testing protocol under [49 CFR Part 40](https://www.transportation.gov/odapc/part40) for safety-sensitive positions. Common substances: THC (marijuana), cocaine, opiates, amphetamines, PCP Expanded panels: benzodiazepines, barbiturates, methadone, synthetic opioids DOT-regulated tests require federally certified urine protocols Hair testing is used for non-DOT roles and detects longer-term drug use Employers choose panels based on job requirements and regulatory compliance. Call (877) 731-6362 to discuss your testing needs and available panels. THC TESTING ## How does a thc drug test work? A THC drug test detects the presence of delta-9-tetrahydrocannabinol (THC) metabolites in a biological specimen, most commonly urine. After marijuana use, the body metabolizes THC into detectable compounds that remain in urine for days to weeks depending on frequency of use. Urine drug tests screen for THC-COOH, the primary metabolite. Urine detection window: typically 3-30 days depending on use frequency Hair testing detects THC use over months but is not DOT approved Passive exposure to marijuana smoke is unlikely to cause a positive urine test All non-negative THC results are reviewed by a certified Medical Review Officer Because THC is fat-soluble, it can remain detectable longer than many other drugs. Contact AMH Nationwide at (877) 731-6362 to learn about testing options and detection windows. URINE TESTING ## What does a drug urine test weed screen detect? A drug urine test weed screen detects THC metabolites in urine to determine recent marijuana use. It does not detect active THC but rather inactive metabolites excreted after the body processes marijuana. The test is sensitive and specific to marijuana use and widely used for employment and legal screenings. Detects THC-COOH metabolite, not active THC Typical detection window ranges from 3 days for infrequent use to 30 days for chronic use Does not detect marijuana use beyond the detection window Non-negative results undergo Medical Review Officer confirmation Urine drug tests for marijuana are the most common screening method due to ease of specimen collection and established detection windows. Call (877) 731-6362 for test scheduling and panel options. ## Arrange Your Test Drug Test with AMH Nationwide Contact AMH Nationwide at (877) 731-6362 to schedule a test drug test or to discuss testing options and detection windows. Our network of labs and collection sites ensures reliable, certified results. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) RESULTS ## How are urine drug test results explained? Urine drug test results indicate the presence or absence of specific drug metabolites. Negative results mean no detectable drug metabolites were found above cutoff levels. Non-negative (positive) results are reviewed by a certified Medical Review Officer who may contact the donor for legitimate medical explanations before final confirmation. Negative: no drug metabolites detected above cutoff Non-negative: metabolites detected, pending MRO review Medical Review Officer contacts donor if necessary Final results reported to the test requester AMH Nationwide ensures all non-negative results are reviewed by certified Medical Review Officers to maintain accuracy and fairness. Contact (877) 731-6362 for result inquiries. TESTING PROCEDURE ## How do drug tests work at AMH Nationwide? AMH Nationwide directs test drug test requesters to one of over 20,000 nationwide collection sites affiliated with five national lab networks. Specimens are collected according to chain of custody and federal protocols when applicable. Samples are sent to labs for analysis with certified Medical Review Officer review of non-negative findings. Test requester contacts AMH at (877) 731-6362 to arrange collection Specimens collected at nationwide sites under chain of custody Labs involved: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, ExperTox Non-negative results reviewed by certified Medical Review Officer AMH Nationwide does not support online ordering. All testing is arranged by phone to ensure proper protocol and chain of custody. 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 Common substances include marijuana (THC), cocaine, opiates, amphetamines, and PCP. Additional panels may test for benzodiazepines, barbiturates, and synthetic opioids. Marijuana metabolites can be detected in urine from 3 days after single use up to 30 days or more for chronic users, depending on frequency and amount consumed. Yes, hair testing can detect drug use over several months, unlike urine which detects recent use. Hair testing is typically used for non-DOT testing. Yes, all non-negative urine drug test results are reviewed by a certified Medical Review Officer who verifies results and may contact the donor for medical explanations. No, AMH Nationwide does not provide online ordering. All test drug tests are arranged by phone at (877) 731-6362 to ensure proper protocols. A drug screen is an initial test to detect possible drug use, often using immunoassay methods. A drug test includes confirmatory testing, usually by chromatography, to verify positive screens. 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/test-drug-test/