How Long Does Oxycodone Stay in Hair follicles?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: Most people clear Oxycodone from hair follicles within up to 90 days of last use — heavy or daily use stretches that window substantially. Expanded urine: 100 ng/mL initial/confirm (oxycodone or noroxycodone).
Oxycodone detection windows by test type
Each specimen tells a different story because each samples different biology:
| Test type | Typical Oxycodone detection window |
|---|---|
| Urine | occasional: 1–3 days · regular: 3–4 days |
| Saliva (Mouth Swab) | any: 1–2 days |
| Hair Follicles | up to 90 days |
| Blood | any: ~24 hours |
("Hair testing reads a 90-day archive: drugs enter the shaft via the bloodstream during growth (~0.5 inch/month), locking in use-history that washing can't erase. Head hair standard segments assume 1.5-inch cuts; body hair extends lookback unpredictably. Single exposures sometimes fall below segment thresholds — chronic use writes loud chapters.",)
Why detection works this way
oxycodone-acetaminophen tablets contains oxycodone plus acetaminophen; the acetaminophen is irrelevant to testing. Oxycodone needs its own assay slot — legacy 5-panel opiate tests (morphine/codeine-focused at 2,000 ng/mL) often miss it, which is why 10/12-panel cups add an OXY strip.
A valid prescription verifies as negative through the MRO; keep the bottle or pharmacy record handy during hiring screenings.
Extended-release formulations (extended-release oxycodone) linger marginally longer than instant-release oxycodone-acetaminophen tablets.
Testing cutoffs in plain language
Expanded urine: 100 ng/mL initial/confirm (oxycodone or noroxycodone). A specimen under the initial cutoff reports negative without further work; a screen above cutoff gets confirmed by mass spectrometry before anyone sees a positive.
Planning ahead? Our at-home drug test guide covers retail kits that mirror lab screens.
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Does Oxycodone Show up on a Drug Test?
No — Oxycodone is absent from standard drug panels. Full guide →
How Long Does oxycodone-acetaminophen tablets Stay in Your System Drug Test?
How long Oxycodone stays detectable in your system (all test types) — urine, hair, saliva & blood windows explained with cutoffs. Full guide →
How to Pass a Drug Test for oxycodone-acetaminophen tablets?
Evidence-based ways to pass a drug test for Oxycodone — realistic timelines, what works, what backfires, and dilution flags to avoid. Full guide →
How Long Does Oxycodone Stay in Urine Drug Test?
How long Oxycodone stays detectable in urine — urine, hair, saliva & blood windows explained with cutoffs. Full guide →
Do prescriptions count against me?
No — verified prescriptions report as negative through the Medical Review Officer. Declare medications at collection and answer the follow-up call.
Related guides
Sources & further reading
- SAMHSA — Mandatory Guidelines for Federal Workplace Drug Testing Programs (cutoffs, MRO process)
- DOT — 49 CFR Part 40 procedures for transportation workplace testing
- Brahm NC et al., Mayo Clinic Proceedings 2008;83(1):66–76 — false-positive cross-reactivity reference
- FDA — drug-of-abuse test device labeling (detection window conventions)