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How Long Does Oxycodone Stay in Your System? Texas Court UA

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TL;DR
Oxycodone urine detection: 1-4 days. Blood 24 hours. Saliva 1-4 days. Hair 90 days. Texas probation panels and prescription verification.
Quick Answer
Oxycodone pharmacokinetics
Oxycodone half-life: 3-5 hours (immediate release); 4-5 hours (extended release "OxyContin" — though release pattern extends effects). Active metabolites: oxymorphone, noroxycodone. Complete elimination: 15-25 hours (about 1 day). Urine detection extends 2-3 days beyond eliminati…
Table of Contents
Oxycodone (OxyContin, Percocet, Roxicodone) detection windows: urine 1-4 days, blood 24 hours, saliva 1-4 days, hair 90 days. Oxycodone is Schedule II under federal CSA and Texas Health & Safety Code § 481.102 (PG 1). Prescription verification is critical for probationers. Below is the complete reference.

Oxycodone pharmacokinetics

Oxycodone half-life: 3-5 hours (immediate release); 4-5 hours (extended release "OxyContin" — though release pattern extends effects). Active metabolites: oxymorphone, noroxycodone. Complete elimination: 15-25 hours (about 1 day). Urine detection extends 2-3 days beyond elimination because metabolites continue excretion at low concentrations. Hepatic CYP3A4 and CYP2D6 metabolism — drug interactions affect half-life.

Detection by test type

Urine: 1-4 days standard cutoff (100 ng/mL for opiates). Some immunoassays don't reliably detect oxycodone (semi-synthetic opioid not detected by older "morphine" assays) — specific oxycodone testing required. Blood: 12-24 hours. Saliva: 1-4 days. Hair: 90 days. Texas probation programs typically use immunoassay + GC-MS confirmation per SAMHSA guidelines.

Opioid testing complexity

Older immunoassays test for "opiates" broadly — morphine, codeine, heroin (which metabolizes to morphine). Semi-synthetic opioids (oxycodone, hydrocodone, hydromorphone, oxymorphone) and synthetic opioids (fentanyl, methadone, buprenorphine) require specific assays. Texas probation programs increasingly use expanded opioid panels including semi-synthetic and synthetic compounds. Fentanyl testing has become standard given overdose epidemic.

Prescription verification

Probationers with legitimate oxycodone prescriptions should: (1) Disclose at intake with current prescription bottle; (2) Provide pharmacy records; (3) Notify probation officer of any prescription changes; (4) Take only as prescribed (no above-dose use); (5) Be aware Texas Prescription Monitoring Program (PMP) tracks all controlled substance prescriptions; (6) Maintain documentation for drug tests. Some probation programs require alternative pain management plans.

Oxycodone is Penalty Group 1 under Texas Health & Safety Code § 481.102 — harshest Texas drug category. Possession penalties under § 481.115: under 1g state-jail felony; 1-4g second-degree (2-20 years); 4-200g first-degree (5-99 years); 200-400g enhanced first-degree; 400+ super first-degree (15-99/life + $250K fine). Doctor shopping: third-degree felony under § 481.129. Counterfeit oxycodone (often fentanyl) — separate enhanced charges and major overdose driver.

Source: DEA — DEA "One Pill Can Kill" Campaign

Texas Penalty Group 3 Charges by Weight

WeightOffenseRange
Under 28 gClass A misdemeanorUp to 1 year county jail + $4,000
28-200 g3rd degree felony2-10 years
200-400 g2nd degree felony2-20 years
400 g+1st degree enhanced5-99 years/life + $100K

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In our practice defending Texas criminal cases, we have represented clients in Collin, Dallas, Denton, and Tarrant County criminal courts on the full Texas Penal Code and Health & Safety Code spectrum. Reggie's prosecutor background in Dallas County means we know the State's evidentiary playbook; Njeri's trial-trained motion practice anchors the suppression-driven defense work.

Frequently Asked Questions

How long does oxycodone stay in urine?

1-4 days for typical doses at standard 100 ng/mL opiate cutoff. Detection requires specific oxycodone testing (older "opiate" panels may miss it). Chronic high-dose users: 4-7 days. Renal impairment extends detection.

Does oxycodone show on standard opiate tests?

Not reliably on older immunoassays designed for morphine/codeine. Semi-synthetic opioids (oxycodone, hydrocodone, hydromorphone) require specific testing. Modern expanded opioid panels include all semi-synthetic and synthetic opioids.

Can prescribed oxycodone cause Texas probation problems?

Not if disclosed and verified. Probationers with legitimate prescriptions can take oxycodone if: prescription disclosed at intake; pharmacy records provided; taken only as prescribed; current prescription maintained. Probation officers can verify through Texas PMP.

What's the penalty for unprescribed oxycodone in Texas?

Penalty Group 1 under Health & Safety Code § 481.115. Under 1g: state-jail felony (180 days-2 years). 1-4g: second-degree (2-20 years). 4-200g: first-degree (5-99 years). 200-400g: enhanced first-degree. 400+: super first-degree (15-99/life + $250K fine).

How does fentanyl affect oxycodone testing?

Fentanyl is a separate synthetic opioid requiring separate testing. Counterfeit "oxycodone" pills sold on street often contain fentanyl — major overdose driver. Texas probation panels now typically include fentanyl testing because of widespread counterfeit pill problems. Positive fentanyl test even when "taking oxycodone" reveals counterfeit pill use.

Last reviewed: 2026-05-13 by Njeri London and Reggie London, co-founding partners, L and L Law Group, PLLC. This content is reviewed for accuracy at least every 12 months and when statutory or case-law changes occur.
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About the Authors

Njeri London, Co-Founding Partner, L and L Law Group
Njeri London
Co-Founding Partner
Texas Bar No. 24043266. Admitted: TXND, TXED, 5th Circuit. Thurgood Marshall School of Law. Focus: Fourth Amendment motion practice, drug-crime defense, federal cases. Verify on Texas Bar
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Reggie London, Co-Founding Partner, L and L Law Group
Reggie London
Co-Founding Partner
Texas Bar No. 24043514. Former Dallas County Assistant District Attorney. Extensive felony trial experience including DWI dockets. Verify on Texas Bar
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How Long Does Oxycodone Stay in System? Texas

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