Opioid detection windows at a glance
| Test type | Approximate detection window |
|---|---|
| Heroin (as 6-MAM / morphine) | Urine ~1–3 days; 6-MAM only a few hours |
| Morphine / codeine | Urine ~1–3 days |
| Oxycodone / hydrocodone | Urine ~1–4 days |
| Fentanyl | Urine ~1–3 days (needs a specific fentanyl test) |
| Methadone | Urine ~3–7 days or longer |
| Saliva (most opioids) | ~1–3 days |
| Hair follicle | Up to ~90 days |
Why the panel matters with opioids
A basic opiate screen is built around morphine and codeine and can miss synthetic and semi-synthetic opioids. Notably, fentanyl and often oxycodone, methadone and tramadol require their own specific tests — they won't reliably show on a standard opiate panel. If any of those matter for your situation, tell us and we'll build the right panel.
What affects the timing
- Which opioid — short-acting vs. long-acting (like methadone) differ a lot
- Dose and how long it's been used
- Your metabolism, liver and kidney function
- The specific test and cutoff level
Prescription painkiller? A valid prescription is verified by a Medical Review Officer on lab-confirmed tests — bring your details. Call or text (559) 272-7953 with questions.
Getting the right test
Standard opiates are covered on the 5-panel; a 10-panel adds methadone, and an expanded panel can add fentanyl and other synthetics. We'll help you pick.
Detection windows are general estimates, not guarantees. Actual times vary widely with dose, how often a substance is used, body weight and metabolism, hydration, the specific test and cutoff level, and individual biology. The only way to know your result is to test. This page is informational and is not medical or legal advice.