--- title: "Best Long-Detection Drug Tests for Legal & Custody Cases" description: "Find the best long-detection drug tests near you with AMH Nationwide's 20,000+ collection sites and certified MRO review. Call us now at (877) 731-6362." author: "AMH Nationwide" date: "2026-08-20" tags: ["drug tests near me"] canonical: "https://amhnationwide.com/best-long-detection-drug-tests/" last_updated: "2026-08-26" --- # Best Long-Detection Drug Tests for Legal & Custody Cases **By AMH Nationwide** | August 20, 2026 Find the best long-detection drug tests near you with AMH Nationwide's 20,000+ collection sites and certified MRO review. Call us now at (877) 731-6362. --- The best long-detection drug tests for legal and custody cases are hair follicle tests that detect drug use up to 90 days. These tests provide reliable results for court and custody decisions. AMH Nationwide routes collection through five national lab networks and ensures every non-negative screen is reviewed by a Medical Review Officer. Call (877) 731-6362. OVERVIEW ## What Are the Best Long-Detection Drug Tests for Legal and Custody Cases? The best long-detection drug tests for legal and custody cases are hair drug tests that can detect drug use within a 90-day window. Hair follicle testing is preferred in these cases because of its extended detection period compared to [urine](https://amhnationwide.com/urine-drug-testing/) or saliva tests. This allows courts and custody evaluators to assess drug use over several months. TEST TYPES ## Which Drug Tests Offer the Longest Detection Windows? Hair follicle drug tests provide the longest detection windows, typically up to 90 days. Urine tests detect recent use from 1 to 7 days, and saliva tests detect even shorter windows. [Extended hair testing](https://amhnationwide.com/extended-hair-testing/) uses a longer hair sample to detect drug use further back in time, sometimes up to 120 days. Hair Follicle Test: Detects drugs up to 90 days or more Urine Drug Test: Detects recent use, 1 to 7 days Saliva Drug Test: Detects very recent use, 1 to 3 days LAB NETWORKS ## How Does AMH Nationwide Handle Long-Detection Drug Test Collections? AMH Nationwide manages collection 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. The requester receives the lab order and is directed to a nearby collection site. AMH does not provide online ordering. All non-negative results are reviewed by a certified Medical Review Officer as part of standard processing. LEGAL USE ## Why Are Hair Drug Tests Considered the Best Court Drug Tests? Hair drug tests are considered the best court drug tests because they provide objective, long-term evidence of drug use. Their [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) and resistance to tampering make them reliable for legal and custody proceedings. Courts often prefer hair testing to establish patterns of drug use over months rather than days. ## Need the Best Long-Detection Drug Test for Your Case? Contact AMH Nationwide to arrange collection through a national lab near you. Call (877) 731-6362 for assistance. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) CUSTODY CASES ## What Is the Best Hair Drug Test for Custody Cases? The best hair drug test for custody cases is an extended hair follicle test that analyzes 1.5 inches or more of hair to cover up to 90 days of drug use. This test helps custody evaluators assess parental substance use history over a longer period, supporting informed decisions about child welfare. PRICING ## How Much Do Long-Detection Drug Tests Cost? Pricing for long-detection drug tests varies depending on the test panel and detection window. Extended hair drug tests typically cost more than standard urine tests due to the complexity and longer detection period. Contact AMH Nationwide for a specific quote. Call (877) 731-6362. DOT TESTING ## Are Hair Tests Used for DOT-Regulated Drug Testing? Hair drug tests are not used for DOT-regulated safety-sensitive roles. DOT testing requires federally certified urine collection protocols under [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair testing is reserved for non-DOT roles or legal and custody cases where longer detection windows are necessary. 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 Hair drug tests can detect drug use for up to 90 days or longer depending on hair length. This makes them ideal for legal and custody cases requiring extended detection. No. AMH Nationwide provides the lab order and directs you to a collection site. There is no online ordering available. Call (877) 731-6362 to get started. Hair drug tests provide longer detection windows but are not necessarily more accurate for recent use. They complement urine tests by showing drug use history over months. Every non-negative screen is reviewed by a certified Medical Review Officer as part of AMH Nationwide’s standard processing. Hair drug tests can detect most common drugs including marijuana, cocaine, opiates, amphetamines, and PCP. The specific panel depends on the test ordered. Call AMH Nationwide at (877) 731-6362 to receive the lab order and be directed to a nearby collection site for the hair drug test. 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/best-long-detection-drug-tests/