What Is Cotinine on a Drug Test?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: No — not on any standard panel. Nicotine is absent from routine 5-, 10-, and 12-panel employment drug tests. Insurance/nicotine-surcharge tests screen cotinine: urine ~200 ng/mL (range 30–500), saliva ~30 ng/mL, blood ~30 ng/mL.
Which panels screen for it
| Panel | Nicotine status |
|---|---|
| 5-Panel | ❌ Not included |
| 10-Panel | ❌ Not included |
| 12-Panel | ❌ Not included |
| DOT 5-panel (safety-sensitive) | ❌ Not included |
The details that matter
Employment drug panels skip nicotine, but insurers and some health-system employers test cotinine (nicotine's primary metabolite) for tobacco surcharges or smoke-free hiring policies. Vapes and pouches (Zyn) produce the same cotinine as cigarettes — delivery method doesn't matter.
Cotinine hangs around much longer than nicotine itself (half-life ~16–19 hours vs ~2 hours), which is why windows are quoted in days.
Hair nicotine/cotinine gives a 90-day smoking history and is used in life-insurance underwriting more than in hiring.
Nicotine-replacement therapy (patches, gum) yields positive cotinine results — disclose NRT use when tested for insurance purposes.
If it IS detected, how long does it last?
| Test type | Typical Nicotine detection window |
|---|---|
| Urine | heavy: up to ~20 days in heavy long-term users |
| Saliva (Mouth Swab) | any: 1–4 days (cotinine) |
| Hair Follicles | 1–3 months |
| Blood | any: 1–3 days (cotinine up to 10) |
False-positive notes
- No significant false positives; the assay is specific to nicotine-family compounds.
Remember: immunoassay screens produce artifacts; mass-spec confirmation and the MRO review are where legitimate explanations win.
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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)