--- title: "9-Month Hair Drug Test: Which Test Do I Need | AMH Nationwide" description: "The 9-month hair drug test which test offers extended detection for drug use. Learn when to choose this test over others. Call (877) 731-6362." author: "AMH Nationwide" date: "2026-08-27" tags: ["9-month hair drug test which test"] canonical: "https://amhnationwide.com/9-month-hair-drug-test-which-test/" last_updated: "2026-08-27" --- # 9-Month Hair Drug Test: Which Test Do I Need | AMH Nationwide **By AMH Nationwide** | August 27, 2026 The 9-month hair drug test which test offers extended detection for drug use. Learn when to choose this test over others. Call (877) 731-6362. --- The 9-month hair drug test which test detects drug use over a 9-month period by analyzing a longer hair sample. It is ideal for employers, courts, probation, or individuals needing extended detection beyond urine or saliva tests. Call (877) 731-6362 to schedule your test or learn more. OVERVIEW ## What is the 9-month hair drug test which test? The 9-month hair drug test which test analyzes a 4.5-inch hair sample to detect drug use over the past 9 months. Hair grows approximately half an inch per month, so this extended length allows for a longer [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) than standard 3-month hair tests, [urine](https://amhnationwide.com/urine-drug-testing/), or saliva drug tests. This test is processed through one of five national lab networks: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, or ExperTox. A certified Medical Review Officer reviews every non-negative result as part of standard processing. USE CASES ## When is the 9-month hair drug test which test the right choice? The 9-month hair drug test which test is best when extended drug use history is required. It is often chosen by: Employers conducting [pre-employment](https://amhnationwide.com/pre-employment-hair-testing/) or random testing for safety-sensitive or high-risk roles who want a longer detection window. Courts or [probation](https://amhnationwide.com/hair-follicle-drug-test-probation/) officers needing reliable evidence of long-term drug use patterns. Individuals seeking comprehensive personal screening beyond the short detection windows of urine or saliva tests. Employers: Extended screening for positions with safety concerns Courts and Probation: Monitoring long-term compliance Personal Use: Detailed drug use history beyond 90 days COMPARISON ## How does the 9-month hair drug test compare to other drug tests? The 9-month hair drug test which test differs from other drug tests primarily in its detection window and sample type. | Test Type | Detection Window | | --- | --- | | Urine Drug Test | 1 to 4 days, up to 7 days for some drugs | | Saliva Drug Test | 1 to 3 days | | Standard 3-Month Hair Test | Up to 90 days | | 9-Month Hair Drug Test | Up to 9 months | Urine and saliva tests detect recent drug use but cannot reliably reveal use beyond a week. Standard hair tests analyze 1.5 inches of hair for a 3-month window, while the 9-month hair test uses 4.5 inches for extended detection. LAB PROCESSING ## How is the 9-month hair drug test processed and reviewed? The 9-month hair drug test sample is collected at a local collection site arranged by AMH Nationwide. The lab receives the hair sample and conducts analysis for common drugs of abuse, including marijuana, cocaine, opiates, amphetamines, and PCP. All non-negative results are reviewed by a certified Medical Review Officer to confirm findings and account for possible legitimate explanations. Because hair testing is non-invasive and difficult to adulterate, it is a reliable method for long-term drug use detection. ## Need a 9-Month Hair Drug Test? Call (877) 731-6362 to arrange your hair drug test through AMH Nationwide and access one of five national lab networks for accurate long-term drug screening. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) REGULATORY ## Is the 9-month hair drug test suitable for DOT-regulated testing? No, the 9-month hair drug test is not suitable for Department of Transportation (DOT) regulated safety-sensitive testing. DOT regulations require federally certified urine testing under [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair testing can be used for non-DOT roles or programs where extended detection is necessary but does not meet DOT protocol requirements. ORDERING ## How do I get a 9-month hair drug test? AMH Nationwide provides the lab order and directs you to a nearby collection site for the 9-month hair drug test. There is no online ordering option. Pricing varies depending on the drug panel and detection window. To schedule a test or get a quote, call (877) 731-6362. 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 The test detects common drugs of abuse including marijuana, cocaine, opiates, amphetamines, and PCP. The exact panel depends on the lab order. Results typically take 3 to 5 business days after the lab receives the sample. Non-negative results undergo Medical Review Officer evaluation. No. DOT requires federally certified urine testing under 49 CFR Part 40. Hair testing is for non-DOT programs. A small hair sample about 4.5 inches long is cut close to the scalp at a collection site. The sample is sent to a lab for analysis. Pricing varies by panel and detection window. Hair tests generally cost more than urine tests. Call (877) 731-6362 for a quote. No. Hair tests detect drug use starting about 7 to 10 days after use, so very recent use may not appear. Urine or saliva tests are better for recent detection. 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/9-month-hair-drug-test-which-test/