--- title: "Drug screen test" description: "Get reliable drug screen test services with nationwide lab networks and certified review. Understand drug screen vs drug test. Call (877) 731-6362 today." author: "AMH Nationwide" date: "2026-08-28" tags: ["drug screen test", "drug screen test | drug screen vs drug test | drug screening vs drug test | accurate drug screening | drug test first | difference between drug test and drug screen | difference between drug test and drug screening | first check drug test vs lab test"] canonical: "https://amhnationwide.com/drug-screen-test/" last_updated: "2026-08-28" --- # Drug screen test **By AMH Nationwide** | August 28, 2026 Get reliable drug screen test services with nationwide lab networks and certified review. Understand drug screen vs drug test. Call (877) 731-6362 today. --- A drug screen test detects the presence of substances in urine, hair, or other specimens using standardized lab processes. AMH Nationwide routes collections through five national lab networks for accuracy and compliance. Certified Medical Review Officers review all non-negative results. Call (877) 731-6362 to schedule your drug screen test. OVERVIEW ## What is a drug screen test? A drug screen test is a laboratory analysis designed to detect the presence of drugs or their metabolites in a biological specimen. The most common specimens include [urine](https://amhnationwide.com/urine-drug-testing/), hair, saliva, or blood. AMH Nationwide facilitates drug screen tests by directing clients to one of five national lab networks: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, and ExperTox. Drug screen tests are used by employers, courts, [probation](https://amhnationwide.com/hair-follicle-drug-test-probation/) officers, and individuals to verify recent or past drug use. The testing process involves specimen collection at authorized sites, followed by laboratory analysis and review by a certified Medical Review Officer (MRO) for any non-negative results. TERMINOLOGY ## What is the difference between a drug screen test and a drug test? The terms drug screen test and drug test are often used interchangeably but can differ in scope and methodology. A drug screen test typically refers to an initial immunoassay test that quickly identifies the presence of drug compounds or metabolites. A drug test may encompass the entire process, including confirmatory testing such as gas chromatography-mass spectrometry (GC-MS) or liquid chromatography-tandem mass spectrometry (LC-MS/MS). Drug screening often serves as a preliminary step to detect possible drug use, while a drug test may imply a more comprehensive analysis including confirmation and medical review. Drug Screen Test: Initial detection using immunoassay methods Drug Test: Comprehensive process including confirmatory lab analysis Drug Screening: Often synonymous with drug screen test but can imply preliminary testing ACCURACY ## How accurate is drug screening compared with drug testing? Accurate drug screening depends on the specimen type, [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/), testing method, and laboratory standards. AMH Nationwide uses federally certified labs and follows strict protocols to ensure accuracy. All non-negative screens undergo confirmation and review by a certified Medical Review Officer, reducing false positives. For example, urine drug screen tests have a detection window of hours to days for most drugs, while hair drug tests detect drug use over months. The choice between drug screening and full drug testing depends on the context and required reliability. PROCESS ## What is the process for a drug screen test at AMH Nationwide? AMH Nationwide does not provide online ordering. Instead, clients call (877) 731-6362 to arrange a drug screen test. The lab order is issued, and the client is directed to a local collection site within AMH’s network of over 20,000 nationwide locations. Collection follows chain-of-custody procedures to maintain specimen integrity. Specimens are sent to one of five national lab networks for analysis. Non-negative results are reviewed by a certified Medical Review Officer. Testing for DOT-regulated safety-sensitive positions follows the federally certified urine protocol under [49 CFR Part 40](https://www.transportation.gov/odapc/part40), while hair testing is reserved for non-DOT roles. ## Schedule Your Drug Screen Test Today Call (877) 731-6362 to arrange a drug screen test through AMH Nationwide and access our network of certified labs and collection sites. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) COMPARISON ## How does hair drug testing compare with urine drug screen tests? Hair drug testing and urine drug screen tests differ mainly in detection windows, specimen collection, and regulatory use. Urine tests typically detect recent drug use within hours to several days. Hair tests reveal drug use over a longer period, usually up to 90 days, by analyzing drug metabolites deposited in hair shafts. Hair testing is less invasive and harder to adulterate but is not approved for DOT-regulated safety-sensitive testing. Urine testing remains the standard for DOT compliance and most workplace drug screen tests. | Feature | Hair Drug Test | Urine Drug Screen Test | | --- | --- | --- | | Detection Window | Up to 90 days | Hours to days | | Specimen Type | Hair | Urine | | DOT Compliance | No | Yes | | Invasiveness | Non-invasive | Moderately invasive | | Adulteration Risk | Lower | Higher | ORDERING ## Can I order a drug screen test online through AMH Nationwide? AMH Nationwide does not offer online ordering for drug screen tests. To initiate testing, you must call (877) 731-6362 to place a lab order and be directed to a collection site. This protocol ensures proper chain-of-custody and compliance with regulatory requirements. Pricing varies depending on the drug panel selected and the detection window required. Contact AMH for a quote and more 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 Drug screen tests typically detect substances such as marijuana, cocaine, opiates, amphetamines, PCP, benzodiazepines, and barbiturates. The specific panel depends on the test ordered. Results usually take 1 to 3 business days after specimen collection, depending on the lab network and confirmatory testing requirements. A certified Medical Review Officer reviews all non-negative drug screen results to verify medical explanations and ensure accuracy before releasing final reports. Hair drug tests provide a longer detection window but are not suitable for all testing purposes. Urine tests remain the standard for recent use and DOT compliance. Drug screen tests detect metabolites indicating actual drug ingestion. Passive exposure rarely results in a positive test due to metabolite thresholds. First check drug tests are point-of-collection immunoassay screens, while lab drug tests involve laboratory analysis with certified procedures and Medical Review Officer oversight. 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/drug-screen-test/