Buprenorphine Drug Test
Updated October 14, 2026
Buprenorphine is the medication in Suboxone and Subutex, prescribed for opioid dependence and sometimes for pain.
The Buprenorphine panel is one of the 14 on every Testr urine drug test, read on site by a certified collector at your door anywhere in the Los Angeles area. On a Testr report it is printed as BUP (Buprenorphine / Suboxone).
How long does buprenorphine stay in your system?
That range is typical rather than a guarantee: how much was taken, how often, body weight and hydration all move it.
The screening cutoff above is the level at or above which the on-site cassette reads positive. Below it the panel reads negative even when a trace is present, which is why the cutoff matters as much as the number of days.
Can a prescription cause a positive on the Buprenorphine panel?
A positive is expected for anyone prescribed Suboxone. Lab confirmation reports measured levels, and every laboratory report goes to a Medical Review Officer (MRO), a physician who reviews laboratory-confirmed results and accounts for valid prescriptions before the report is released.
What does a positive on the Buprenorphine drug test panel mean?
The on-site read is a drug screen. It reports positive or negative against the screening cutoff, not a measured level. Laboratory confirmation is what produces a number: a CAP-accredited laboratory quantifies the specimen by LC-MS/MS and reports measured levels, in about 72 hours. Every laboratory report goes to a Medical Review Officer (MRO), a physician who reviews laboratory-confirmed results and accounts for valid prescriptions before the report is released. Confirmation can be added when you book, or from the app within 2 hours of collection, while the specimen is still viable.
Suboxone, Subutex, Zubsolv and the BUP panel
Buprenorphine reaches a drug test under several names. Suboxone, Zubsolv and many generic tablets and films pair it with naloxone; Subutex and generic buprenorphine-only tablets contain buprenorphine alone; and lower-dose patches and films are prescribed for pain. Whichever product it is, the BUP panel looks for buprenorphine itself, at a 10 ng/mL screening cutoff. A positive is expected for anyone prescribed Suboxone, so on this panel the useful question is usually not whether the line reads positive but what the laboratory measures.
What the BUP line does not screen
The BUP strip is not a general opioid test. Methadone, fentanyl and oxycodone each have their own line on the cassette, and buprenorphine does not read on the opiates (MOR) panel. Naloxone, the second ingredient in Suboxone, has no rapid panel, and neither does naltrexone, a different medicine. Both are on the laboratory confirmation menu. BUP is not one of the usual additions to a 10-panel cup, so many kits leave it off. Tramadol, tapentadol and the kratom alkaloids are laboratory questions as well.
Buprenorphine and norbuprenorphine at the laboratory
Laboratory confirmation measures buprenorphine at 5 ng/mL and norbuprenorphine, its chief metabolite, at 10 ng/mL, each reported as a level. For someone prescribed buprenorphine, that pair turns an expected positive into something specific: buprenorphine and norbuprenorphine reported together, from a specimen collected on a known date under a chain-of-custody code.
What a BUP result cannot tell you
The BUP line reads at or above 10 ng/mL, or below it. It cannot name the product, so Suboxone, Zubsolv, Subutex and a pain patch all look the same, and it cannot say how much was taken or when. A negative is not proof that no buprenorphine was taken either: a specimen collected late in the window, or a dilute one, can fall under the cutoff. A measured buprenorphine level, a norbuprenorphine level and the collection date, together, are what a reviewer has to work with.
What BUP means on the report
What does BUP mean on a drug test?
BUP stands for buprenorphine. On a Testr report, and on most test cups, this panel is printed as BUP. On a Testr screen the BUP panel reads positive at or above 10 ng/mL, and it is usually detectable in urine for 3-7 days after the last dose.
What is the BUP cutoff on a drug test?
10 ng/mL on a Testr screen: at or above that level the BUP panel reads positive, below it negative. Other cups can print BUP with a different cutoff. Laboratory confirmation applies its own cutoff to each compound it measures and reports the measured level rather than a positive or negative.
Every code on the cassette, with its cutoff and detection window, is on one page: drug test abbreviations, decoded.
More questions about buprenorphine
Does Suboxone show up on a drug test?
Yes, on the BUP panel. Suboxone contains buprenorphine, which the BUP panel screens for at 10 ng/mL; buprenorphine is usually detectable in urine for 3-7 days after the last dose. Laboratory confirmation measures buprenorphine and norbuprenorphine and reports a level for each.
Does buprenorphine show up as an opiate?
No. Buprenorphine does not read on the opiates (MOR) panel, which is why the 14-panel cassette screens for it separately. A specimen from someone taking Suboxone can show BUP positive while MOR stays negative.
Is BUP on a 10-panel drug test?
Not on most. Most 10-panel kits add benzodiazepines, barbiturates and methadone to the standard five, then methamphetamine or oxycodone; buprenorphine is not one of the usual additions, so look for BUP among the codes on the cup. A Testr visit includes it every time.
Can a BUP test tell Suboxone from Subutex?
No. Both contain buprenorphine, which is all the BUP strip looks for. Suboxone also contains naloxone, which has no rapid panel and is listed on the laboratory confirmation menu.
Does a Butrans patch show up on a drug test?
Butrans is a buprenorphine skin patch prescribed for pain, so the BUP panel is the line that screens for it, at 10 ng/mL. Whether a given specimen reaches that cutoff depends on the dose and the timing; the screen cannot tell a patch from a tablet or a film, and laboratory confirmation reports the measured levels.
Does Zubsolv show up on a drug test?
Yes. Zubsolv contains buprenorphine and naloxone, like Suboxone, and the BUP panel screens for the buprenorphine at 10 ng/mL. Naloxone has no rapid panel but is listed on the laboratory confirmation menu.
How the Testr drug test screens for it
This panel is part of every Testr drug test. A certified collector handles the urine collection at your home, checks specimen temperature, and reads a clinical 14-panel drug screen cassette on the spot. For measured levels rather than a positive/negative read, add laboratory confirmation: a CAP-accredited lab quantifies the result by LC-MS/MS, with measured levels on the report. Testr covers the Los Angeles area seven days a week, 7 AM to 7 PM, with the earliest window 3 hours after you book.