---
title: "How the Hair Test for Fentanyl Works"
description: "Learn how the hair test for fentanyl works, its process, and accuracy with AMH Nationwide's certified labs. Call us now at (877) 731-6362."
author: "AMH Nationwide"
date: "2023-03-14"
tags: ["how the hair test for fentanyl works", "Drug Testing", "Fentanyl hair test", "Fentanyl test", "Hair test for fentanyl"]
canonical: "https://amhnationwide.com/how-the-hair-test-for-fentanyl-works/"
last_updated: "2026-08-27"
---

# How the Hair Test for Fentanyl Works

**By AMH Nationwide** | March 14, 2023

Learn how the hair test for fentanyl works, its process, and accuracy with AMH Nationwide's certified labs. Call us now at (877) 731-6362.

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**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/how-the-hair-test-for-fentanyl-works/