How Long Do Opioids Stay in Your System?
Opioid detection windows vary by specific drug and test type.
Detection Windows by Opioid (Urine)
- Heroin: 2–3 days
- Codeine: 2–4 days
- Morphine: 2–4 days
- Oxycodone: 3–4 days
- Hydrocodone: 3–4 days
- Fentanyl: 1–3 days
- Methadone: 3–14 days
Hair Testing
- All opioids: up to 90 days
Important Notes
- Poppy seeds can cause false positive for codeine/morphine
- Confirmatory GC-MS distinguishes heroin from prescription opioids
- Chronic use extends detection window
Source: SAMHSA, NIDA, Mayo Clinic.
Ratings summarize government-reported measures — they don't capture your personal needs. Visit the facility, ask about staffing and services, and use CMS checklists. This profile is informational only and is not a recommendation.
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