How Long Does Suboxone Stay in Your System?
Reviewed by Josie Desmarais, PMHNP-BC · Board-Certified Psychiatric-Mental Health Nurse Practitioner · Last updated August 2026
Suboxone (buprenorphine/naloxone) stays in your system for 5–8 days on average after your last dose. Urine tests detect it for 3–7 days — up to 14 days at high doses. Hair follicle tests can show positive results for up to 90 days. The exact window depends on your dose, how long you’ve been taking it, your metabolism, and body composition.
Short answer: Medication-assisted treatment combines FDA-approved medication with clinical support. A psychiatric provider can assess whether it is right for you and manage it safely.
Understanding clearance helps your medication-assisted treatment team time doses correctly.
If you’re in MAT or considering starting, understanding what drug tests actually detect — and why — matters for employment, court compliance, and surgical planning.
How Long Does Buprenorphine Stay in Your System?
Buprenorphine is the primary active ingredient in Suboxone. It has an unusually long half-life of 24–42 hours (mean approximately 37 hours) — significantly longer than most opioids. After stopping, full clearance from the bloodstream takes 5–8 days for most people at therapeutic doses. For more on this, see our guide to whether Suboxone shows up on a drug test.
Detection windows vary by test type:
| Test Type | Detection Window | Notes |
|---|---|---|
| Urine | 3–7 days | Most common method. Up to 10–14 days at high doses or with long-term use. Standard 5- or 10-panel screens do NOT include buprenorphine — a specific immunoassay must be ordered. |
| Blood | 24–48 hours | Shortest detection window. Rarely used for routine MAT monitoring. |
| Saliva | 1–5 days | Less common than urine. Oral fluid tests can detect buprenorphine but are not standard in most programs. |
| Hair | Up to 90 days | Longest window. A 1.5-inch hair sample covers approximately 90 days. Tests detect norbuprenorphine (the metabolite) as well as buprenorphine itself. |
Norbuprenorphine — the primary metabolite produced as your body processes buprenorphine — often persists in urine longer than the parent drug. Laboratories that test for MAT compliance typically look for both buprenorphine and norbuprenorphine. If your test comes back positive only for norbuprenorphine, it still confirms recent buprenorphine use.
How Long Does Naloxone Stay in Your System?
Naloxone is the second component of Suboxone. When taken sublingually as prescribed, it is poorly absorbed — oral bioavailability is approximately 3–10%. Its role is deterrence: if Suboxone is injected rather than dissolved under the tongue, naloxone becomes active and precipitates withdrawal.
Because so little naloxone enters the bloodstream through sublingual dosing, it clears quickly — within 2–12 hours. Naloxone is generally not a concern for drug testing in people taking Suboxone as prescribed. We cover why Suboxone can make you tired in a separate article.
Factors That Affect How Long Suboxone Stays in Your System
Detection windows are averages, not guarantees. Individual variation can push clearance earlier or later:
- Dose. Higher daily doses mean more drug to clear. Someone on 16–24mg/day will clear more slowly than someone on 2–4mg/day.
- Duration of use. Long-term use builds steady-state tissue concentrations. Buprenorphine is lipophilic (fat-soluble) — it accumulates in fatty tissue and releases slowly.
- Body composition. Higher body fat percentage correlates with longer clearance time.
- Liver function and CYP3A4 activity. Buprenorphine is primarily metabolized through the CYP3A4 enzyme pathway. Medications that inhibit CYP3A4 (certain antifungals, macrolide antibiotics, grapefruit) slow clearance; inducers (rifampin, carbamazepine) speed it.
- Kidney function. Impaired kidney function slows elimination of norbuprenorphine, the metabolite.
- Urine pH. Acidic urine (from certain diets or medications) speeds buprenorphine excretion; alkaline urine slows it.
- Age. Older individuals often metabolize medications more slowly, extending clearance.
Why This Matters: Three Common Scenarios
Drug Testing at Work or Court
Standard opioid drug screens — 5-panel, 10-panel, or 12-panel — do not automatically test for buprenorphine. A buprenorphine-specific immunoassay must be added. If your workplace or court program uses an expanded panel that includes buprenorphine and you have a valid prescription, a Medical Review Officer (MRO) can verify your legitimate MAT status with your prescriber. Being in MAT is not disqualifying under most drug-free workplace policies when properly documented. Tell your provider if drug testing is part of your obligations — they can provide documentation.
Surgery and Anesthesia Planning
Buprenorphine’s high receptor affinity can interfere with opioid-based pain management during and after surgery. Your surgical team and anesthesiologist need to know you’re on Suboxone well before the procedure. Do not stop Suboxone without a coordinated plan from your MAT provider — abrupt discontinuation before surgery significantly increases relapse risk. Your MAT provider can communicate directly with your surgical team about perioperative pain management. If that applies to you, read more about how long Suboxone blocks opiates.
Transitioning to Naltrexone (Vivitrol)
If your provider is transitioning you from Suboxone to naltrexone, you must be fully opioid-free for 7–10 days before taking the first naltrexone dose — otherwise precipitated withdrawal will result. Understanding buprenorphine clearance timelines is essential for planning this transition safely. Your provider will guide the timing based on your specific dose and duration of treatment.
This article is for educational purposes only. Suboxone (buprenorphine/naloxone) requires a prescription and ongoing medical supervision. Contact Trust Psychiatry & Wellness at (561) 849-4449 to discuss MAT treatment options.
Frequently Asked Questions
Will Suboxone show up on a standard 5-panel drug test?
No. Standard 5-panel and 10-panel screens do not test for buprenorphine. A buprenorphine-specific immunoassay must be ordered separately. If the panel includes buprenorphine and you have a valid prescription, a Medical Review Officer can confirm your legitimate MAT status. Our team also explains how to maximize Suboxone absorption in detail.
Can I fail a drug test for opioids while on Suboxone?
In most cases, no. Buprenorphine does not typically cross-react with standard opiate immunoassays. However, some less-specific assays have produced cross-reactive results. If you receive an unexpected positive for opioids, request a GC-MS confirmatory test, which identifies individual compounds with specificity.
How can I speed up Suboxone clearance?
No clinically proven method significantly accelerates clearance. Staying hydrated, maintaining normal kidney function, and avoiding CYP3A4 inhibitors may support normal metabolism. Do not alter your dose or stop Suboxone without consulting your prescriber — the risks of abrupt discontinuation are significant. Learn more about taking gabapentin with Suboxone here.
How long after stopping Suboxone will urine test clean?
At therapeutic doses, urine typically clears within 3–7 days of the last dose. At higher doses or after long-term treatment, clearance may take 10–14 days. Norbuprenorphine (the metabolite) may linger slightly longer than buprenorphine itself.
Does Suboxone show up in a hair follicle test for a new job?
Yes. Hair tests detect buprenorphine for up to 90 days. If you have a valid prescription, document your MAT treatment with your provider and disclose to the MRO during review. A prescription is a legal, medically supervised use — it is not disqualifying in most contexts when properly disclosed.
Does norbuprenorphine show up separately on drug tests?
Yes. Many MAT compliance panels test for both buprenorphine and norbuprenorphine as separate analytes. Norbuprenorphine-only results can indicate buprenorphine use several days prior, after the parent drug has cleared. Labs use the ratio of the two compounds to assess compliance and timing. You may also want to understand who can prescribe Suboxone.
Get Expert MAT Support at Trust Psychiatry & Wellness
Questions about Suboxone testing in the context of your recovery deserve an informed, non-judgmental provider. At Trust Psychiatry & Wellness, Josie Desmarais, PMHNP-BC offers medication-assisted treatment for opioid use disorder via telehealth across Florida — including same-day and next-day appointments. We coordinate with courts, employers, and surgical teams when documentation is needed. Serving West Palm Beach and all of Florida. Call (561) 849-4449 or contact us online to schedule.
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Reviewed by · Board-Certified Psychiatric-Mental Health Nurse Practitioner
Josie Desmarais is a board-certified psychiatric-mental health nurse practitioner (PMHNP-BC) at Trust Psychiatry – Mental Health West Palm Beach. She provides psychiatric evaluation and medication management, and helps patients understand how medication-assisted treatment supports recovery from opioid use, through secure telepsychiatry for adults across Florida.