Looking for treatment? Call or text (888) 835-9995 to start care today — or return to the homepage.
How long does oxycodone stay in your system?
Oxycodone is a prescription opioid pain medication. It is available in two main forms:
Immediate-release — the tablet releases the full dose right away. Effects begin within about an hour and last about 4–6 hours. This form is taken multiple times a day as needed. Brand names include Percocet (oxycodone combined with acetaminophen, the same pain reliever in Tylenol) and Roxicodone (oxycodone by itself). Generic versions are widely available.
Extended-release — the tablet is designed to release the medication slowly over about 12 hours, so it does not need to be taken as often. The brand name for this form is OxyContin. It contains oxycodone by itself — no acetaminophen. Generic extended-release versions are also available.
The medication inside all of these is the same: oxycodone. The brand names refer to how the drug is packaged and delivered — not to different drugs.
After the last dose, oxycodone is typically detectable in urine for about 3–4 days.
How the body clears it
What happens after you take it.
Oxycodone's effects last a few hours per dose, but the body takes longer to fully clear it. After the effects wear off, the liver continues breaking the drug down and the kidneys continue clearing what is left through urine.
Drug tests detect what remains during this clearing process — not whether the drug is still active. This is why someone can test positive for oxycodone a day or two after the effects have worn off.
Detection by test type
How long it shows up on different tests.
Urine
About 3–4 days after the last dose. Extended-release forms (OxyContin) may take slightly longer to clear because the medication is still being released hours after the tablet was taken. The difference is usually small — on the order of hours, not days.
Blood
About 12–24 hours. Blood testing is used mainly in hospitals and emergency settings — not routine screening.
Saliva
About 24–48 hours. Some workplace programs use saliva testing.
Hair
Up to 90 days. Hair testing is uncommon in treatment settings.
Which tests find it
Standard drug tests often miss oxycodone.
This is one of the most important and commonly misunderstood things about oxycodone and drug testing.
The most basic drug screens are designed to find a limited group of older opioids — mainly morphine and codeine. Oxycodone is a different kind of opioid, and these basic tests often do not pick it up.
This means someone who has recently used oxycodone can test "negative for opioids" on a basic screen. The drug is there — the test just was not built to find it.
To detect oxycodone reliably, a more specific test is needed — one designed to look for oxycodone directly. These more specific tests are commonly used in treatment settings. If there is any question, a laboratory confirmation test can identify exactly which substances are present.
A negative result on a basic drug screen does not mean oxycodone is absent. If oxycodone use is relevant — for treatment planning, for monitoring, or for any clinical purpose — a specific test must be requested.
OxyContin vs immediate-release
Does OxyContin stay in the body longer?
OxyContin releases oxycodone slowly over about 12 hours instead of all at once. Because the body is still absorbing the drug hours after the tablet was taken, it takes slightly longer to fully clear.
In terms of drug testing, this may extend the detection window modestly. But both forms are typically detectable in urine for about 3–4 days.
The drug being released is the same — oxycodone. OxyContin is a brand name for extended-release oxycodone. Percocet is a brand name for immediate-release oxycodone combined with acetaminophen. The tests look for the same thing regardless of which product was used.
Starting treatment after oxycodone
What this means for beginning Suboxone.
When starting Suboxone (buprenorphine) treatment, timing matters. Suboxone works differently from oxycodone — it activates the same parts of the body but to a lesser degree. If it is taken too soon after oxycodone — while the oxycodone is still active — it can push it aside and cause a sudden onset of withdrawal. This is uncomfortable but avoidable.
The key is waiting until oxycodone has worn off and the body has begun to feel withdrawal on its own. At that point, starting Suboxone provides relief rather than making things worse. Your physician manages this timing based on what you were taking, when you last took it, and how you are feeling. This conversation happens during your first visit.
For most patients coming from oxycodone, the process is more straightforward than with longer-acting opioids like fentanyl. OxyContin may require a slightly longer wait than immediate-release forms because the drug is still being released after the last dose.
What this means in treatment
How testing fits into care.
At MyStreetHealth, drug testing is part of ongoing care — a tool that helps your physician understand the full picture. A positive result for oxycodone at the start of treatment is expected. It tells your physician what you have been using and helps inform how treatment begins.
During treatment, results are discussed as part of the conversation between you and your physician. Care is adjusted based on what results show — not as a disciplinary response, but as a clinical one.
Sources
Where this information comes from.
Moeller KE et al. — Clinical Interpretation of Urine Drug Tests (Mayo Clin Proc, 2017)
How drug tests work, why they often miss oxycodone, and how results should be interpreted in clinical practice. Mayo Clinic Proceedings 2017;92(5):774–796.
How the body processes oxycodone — absorption, breakdown, and elimination.
Related
← All Learn topics · Hydrocodone detection · Opioid detection times · Fentanyl detection · Suboxone and drug testing
MyStreetHealth serves
Virginia · Maryland · Washington DC · West Virginia · Ohio
Common questions
Frequently asked
How long does oxycodone stay in urine?
About 3–4 days. Extended-release forms may extend this slightly.
Does oxycodone show up on a standard drug test?
Often not. Basic drug screens are designed to find morphine, not oxycodone. A more specific test is needed.
What is the difference between OxyContin and Percocet?
Both contain oxycodone. OxyContin is oxycodone alone in an extended-release form — it releases gradually over about 12 hours. Percocet is oxycodone combined with acetaminophen (Tylenol) in an immediate-release form.
What is the difference between OxyContin and oxycodone?
OxyContin is a brand name for extended-release oxycodone. Oxycodone is the drug. OxyContin is one way it is packaged — in a tablet that releases it slowly.
Also on this site