--- title: "19-Panel Hair Follicle Drug Test: FAQ | AMH Nationwide" description: "Find detailed answers on the 19-panel hair follicle drug test FAQ. Learn about detection, collection, and processing. Call (877) 731-6362 to schedule testing." author: "AMH Nationwide" date: "2026-08-27" tags: ["19-panel hair follicle drug test faq"] canonical: "https://amhnationwide.com/19-panel-hair-follicle-drug-test-faq/" last_updated: "2026-08-27" --- # 19-Panel Hair Follicle Drug Test: FAQ | AMH Nationwide **By AMH Nationwide** | August 27, 2026 Find detailed answers on the 19-panel hair follicle drug test FAQ. Learn about detection, collection, and processing. Call (877) 731-6362 to schedule testing. --- The 19-panel hair follicle drug test FAQ provides essential information on a comprehensive drug screening method that detects drug use over up to 90 days. It analyzes hair samples for 19 substances with high accuracy. Collection is routed through five national lab networks and reviewed by a Medical Review Officer. Call (877) 731-6362 to arrange testing. TEST BASICS ## What is a 19-panel hair follicle drug test? A 19-panel hair follicle drug test is a laboratory analysis that detects the presence of 19 different drugs or their metabolites in a small hair sample. It provides a long [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/), typically up to 90 days, by analyzing hair growth. This test is used for non-DOT employment screening and other purposes requiring extended drug use history. DRUGS DETECTED ## Which drugs are included in the 19-panel hair follicle drug test? The 19-panel hair follicle drug test screens for a broad range of substances. These typically include amphetamines, cocaine, marijuana (THC), opiates, phencyclidine (PCP), benzodiazepines, barbiturates, methadone, oxycodone, fentanyl, tramadol, buprenorphine, ecstasy (MDMA), and others. Exact panels vary by lab but cover common drugs of abuse. COLLECTION PROCESS ## How is the hair sample collected for this test? Hair collection involves cutting approximately 1.5 inches of hair from the crown area close to the scalp. The sample size is about the width of a pencil. Collection is performed at a designated site within the national lab networks including [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, or ExperTox. AMH Nationwide provides the lab order and directs the requester to the nearest collection site. DETECTION WINDOW ## What is the detection window for the 19-panel hair follicle drug test? The detection window for this test is generally up to 90 days from the date of collection. Hair grows about half an inch per month, and the standard 1.5-inch sample represents approximately three months of drug use history. This extended window makes it useful for identifying long-term drug use rather than recent consumption. ## Schedule Your 19-Panel Hair Follicle Drug Test Call (877) 731-6362 to obtain your lab order and be directed to a nearby collection site in one of our five national lab networks. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) RESULTS AND REVIEW ## How are test results processed and reviewed? After collection, samples are sent to one of five national lab networks for analysis using validated methods. Any non-negative screening result undergoes review by a certified Medical Review Officer (MRO) who evaluates the findings considering medical explanations or prescriptions. Final reports are then provided to the requester. ORDERING AND COST ## How can I arrange a 19-panel hair follicle drug test and what is the cost? AMH Nationwide does not offer online ordering. To arrange testing, call (877) 731-6362 to obtain a lab order and be directed to a collection site within the national lab networks. Pricing varies depending on the specific panel and detection window. Contact AMH for a detailed quote. 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 treatments like bleaching, dyeing, or perming can sometimes reduce drug concentrations in hair. However, laboratories use sensitive methods to detect drugs despite these treatments. It is important to disclose any recent hair treatments to the Medical Review Officer during result review. No. DOT-regulated safety-sensitive testing requires the federally certified [urine](https://amhnationwide.com/urine-drug-testing/) protocol under [49 CFR Part 40](https://www.transportation.gov/odapc/part40). Hair follicle testing is used for non-DOT employment and other drug screening needs. If the hair sample is insufficient in length or quantity, the collection site may request a repeat collection or an alternative specimen type. AMH will assist in coordinating the next steps to ensure accurate testing. Typical turnaround time for test results is about 5 to 7 business days after sample receipt at the lab. Expedited processing may be available by request. Standard testing analyzes approximately 1.5 inches of hair representing about 90 days of growth. Longer detection windows are possible by analyzing longer hair segments, but this is not common practice and may require special arrangements. Employers, legal entities, healthcare providers, and individuals may request this test through AMH Nationwide. AMH provides the lab order and directs to collection sites but does not permit online ordering. 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/19-panel-hair-follicle-drug-test-faq/