Quick answer
Mescaline (peyote) is typically detectable in urine for roughly 1–3 days (specialised assay) after any use. It is not part of standard employment panels.
Not screened on standard employment panels.
Typical cutoff: Not on standard panels; requires a dedicated assay. Urine detection is typically about 1–3 days.
Detection window by test type
| urine | |
|---|---|
| Any use | roughly 1–3 days (specialised assay) |
| saliva | |
| Any use | limited data |
| hair | |
| Any use | detectable on specialised testing |
| blood | |
| Any use | hours |
Ranges reflect typical published detection windows and vary with dose, frequency, body composition, hydration and the assay used.
Key details
Mescaline is the psychoactive alkaloid in peyote and San Pedro cactus. Standard workplace panels do not include it.
Detection requires a dedicated assay; a routine 5-, 10- or 12-panel will not identify mescaline.
Because it is used in small quantities and cleared relatively quickly, urine windows are short compared with cannabis or benzodiazepines.
How Mescaline (peyote) is tested
Not on standard panels; requires a dedicated assay. Urine detection is typically about 1–3 days. Screening immunoassays are presumptive — a non-negative screen is confirmed by GC-MS or LC-MS/MS at a lower cutoff before it is reported as positive. It is not part of the standard 5-, 10- or 12-panel or DOT tests.
Legal status
Schedule I (with narrow religious exemptions for some Native American Church use).
Frequently asked questions
How long does mescaline (peyote) stay in your system?
In urine, typical detection is roughly 1–3 days (specialised assay). Hair can detect use for up to 90 days and saliva/blood windows are usually shorter.
Will mescaline (peyote) show up on a standard drug test?
No — Mescaline (peyote) 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.
Mescaline (peyote) testing by state
Related substances
Cite this page
DrugPanels. “Mescaline (peyote) Detection Time.” https://drugpanels.com/detection/mescaline/. Accessed 2026-09-11.
Sources
- NIDA research monographs on drug testing and pharmacokinetics — National Institute on Drug Abuse — nida.nih.gov
Detection windows describe typical ranges from the published literature and assay documentation; individual results vary. See our methodology.