Substance guides
How long does Subutex stay in your system?
Published July 3, 2025 · 6 min read · Updated April 2026
Reviewed for accuracy by licensed clinical professionals.
Subutex contains buprenorphine without naloxone. Detection is identical to Suboxone since both contain the same active opioid.
Detection
Urine: 7-14 days. Requires specific buprenorphine panel, NOT detected on standard opioid screens. Blood: 2-7 days. Hair: up to 90 days.
Subutex vs Suboxone
Detection is the same because both contain buprenorphine. The naloxone in Suboxone is poorly absorbed sublingually and does not significantly affect testing.
Why Subutex exists
Subutex is prescribed when naloxone is contraindicated (pregnancy) or not tolerated. It has higher diversion potential than Suboxone because it lacks the naloxone deterrent.
Frequently asked questions
How long does Subutex stay in urine?
7-14 days with specific buprenorphine testing.
Is Subutex testing different from Suboxone?
No. Both contain buprenorphine and produce the same test results.
Does Subutex show on a regular drug test?
Not on standard opioid panels. Specific buprenorphine testing required.
Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.