Does Quetiapine Show Up on a Drug Test?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: Sometimes. Quetiapine isn't on every standard panel — coverage depends on panel width and assay configuration. Not screened; documented methadone-screen and TCA-screen cross-reactivity.
Which panels screen for it
| Panel | Quetiapine status |
|---|---|
| 5-Panel | ⚠️ Screen interference only |
| 10-Panel | ⚠️ Screen interference only |
| 12-Panel | ⚠️ Screen interference only |
| DOT 5-panel (safety-sensitive) | ❌ Not included |
The details that matter
quetiapine is never a target, but it carries TWO documented screen-false-positive risks: methadone strips and TCA strips. Both resolve with GC–MS confirmation and MRO documentation.
If it IS detected, how long does it last?
| Test type | Typical Quetiapine detection window |
|---|---|
| Urine | any: interference ~2–4 days post-dose |
| Saliva (Mouth Swab) | any: n/a |
| Hair Follicles | n/a |
| Blood | any: n/a |
False-positive notes
- Methadone-screen FP (multiple published cases); TCA-screen FP (assay-dependent).
Remember: immunoassay screens produce artifacts; mass-spec confirmation and the MRO review are where legitimate explanations win.
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Does quetiapine Show up on a Drug Test?
No — standard employment panels don't include Quetiapine. Only specialized orders reach it.
Will quetiapine Show up on a Drug Test?
No — standard employment panels don't include Quetiapine. Only specialized orders reach it.
How accurate are drug tests?
Lab-based immunoassay screens agree with confirmation testing ~97% of the time; confirmed GC–MS results are considered definitive. Home kits trade legal defensibility for convenience.
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.
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)