What Is Heroin? Drug Class, Schedule & Drug Test Answers
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated September 2026
Quick answer: Heroin is a Semi-synthetic opioid agonist (diacetylmorphine). Schedule I (no accepted medical use in the US). Here's how the drug is classified, whether it's a narcotic/controlled substance, and what that means for testing.
What is Heroin?
Drug class: Semi-synthetic opioid agonist (diacetylmorphine)
Federal schedule: Schedule I (no accepted medical use in the US).
Heroin is not itself a panel analyte. Within minutes of use it is deacetylated to 6-acetylmorphine (6-MAM) and then to morphine, so classic opiate strips catch the morphine metabolite — but a morphine positive alone cannot prove heroin, because codeine, morphine, and poppy seeds produce the same result.
Is Heroin a narcotic?
It is classified as a narcotic under the DEA's federal schedule. What matters more for you: Schedule I (no accepted medical use in the US)..
Does it show up on drug tests?
No — it is not on the standard 5-panel; it appears only on expanded or panel-specific orders. See the full Heroin drug test guide for detection windows and cutoffs.
False-positive caution
- Poppy seeds produce genuine morphine/codeine positives but never 6-MAM; the 2,000 ng/mL opiate cutoff is calibrated to tolerate dietary exposure.
- Codeine metabolizes to morphine in the body, so a morphine positive without 6-MAM is consistent with codeine, morphine, or heroin — 6-MAM confirmation is what separates them.
Certified labs nationwide · Results in 1–2 days
Need a test? Order online, test same-day →People also ask
How Long Does Heroin Stay in Your System?
How long Heroin stays detectable in your system (all test types) — urine, hair, saliva & blood windows explained with cutoffs. Full guide →
How Long Does Heroin Stay in Urine?
How long Heroin stays detectable in urine — urine, hair, saliva & blood windows explained with cutoffs. Full guide →
What Does Heroin Show up As on a Drug Test?
Yes — Heroin appears on standard drug panels. Full guide →
Heroin Drug Test Guide: Panels, Detection Windows & More?
Complete Heroin drug test guide: which panels detect it, urine/hair/saliva/blood detection windows, cutoff levels and prescription verification. Full guide →
Do prescriptions count against me?
No — verified prescriptions report as negative through the Medical Review Officer. Declare medications at collection and answer the follow-up call.
Sources & further reading
- SAMHSA — Mandatory Guidelines for Federal Workplace Drug Testing Programs (cutoffs, MRO process)
- DOT — 49 CFR Part 40 procedures for transportation workplace testing
- Brahm NC et al., Mayo Clinic Proceedings 2008;83(1):66–76 — false-positive cross-reactivity reference
- FDA — drug-of-abuse test device labeling (detection window conventions)