Quick answer
Modafinil is typically detectable in urine for 2–4 days (long half-life ~15 h, modafinil acid tail) after any use. It is not part of standard employment panels.
Not screened on standard employment panels.
Typical cutoff: Specialized LC–MS only (research/anti-doping contexts); not on employment panels.
Detection window by test type
| urine | |
|---|---|
| Any use | 2–4 days (long half-life ~15 h, modafinil acid tail) |
| saliva | |
| Any use | ~1–2 days |
| hair | |
| Any use | rarely tested |
| blood | |
| Any use | ~1–2 days |
Ranges reflect typical published detection windows and vary with dose, frequency, body composition, hydration and the assay used.
Key details
Standard workplace panels cannot detect modafinil — it requires purpose-built mass-spectrometry orders seen mainly in sports doping control, where stimulant classes are prohibited without TUEs.
Frequently asked questions
How long does modafinil stay in your system?
In urine, typical detection is 2–4 days (long half-life ~15 h, modafinil acid tail) (any use). Hair can detect use for up to 90 days and saliva/blood windows are usually shorter.
Will modafinil show up on a standard drug test?
No — Modafinil is not part of the standard 5-, 10- or 12-panel or DOT tests. It would require a specialised or expanded assay.
How accurate are these detection windows?
They are typical ranges from published literature and assay documentation, not guarantees. Clearance depends on dose, frequency, metabolism and the specific test cutoff used.
Related substances
Cite this page
DrugPanels. “Modafinil Detection Time.” https://drugpanels.com/detection/modafinil/. Accessed 2026-09-10.
Sources
- Peer-reviewed literature (PubMed) — U.S. National Library of Medicine — pubmed.ncbi.nlm.nih.gov
Detection windows describe typical ranges from the published literature and assay documentation; individual results vary. See our methodology.