Quick answer
Ondansetron is typically detectable in urine for not tested / no interference after any use. It is not part of standard employment panels.
Not screened on standard employment panels.
Typical cutoff: Never screened.
Detection window by test type
| urine | |
|---|---|
| Any use | not tested / no interference |
| saliva | |
| Any use | n/a |
| hair | |
| Any use | n/a |
| blood | |
| Any use | n/a |
Ranges reflect typical published detection windows and vary with dose, frequency, body composition, hydration and the assay used.
Key details
Anti-nausea medications like ondansetron have no interaction with drug tests of any kind — no analyte status, no cross-reactivity reports.
Frequently asked questions
How long does ondansetron stay in your system?
In urine, typical detection is not tested / no interference (any use). Hair can detect use for up to 90 days and saliva/blood windows are usually shorter.
Will ondansetron show up on a standard drug test?
No — Ondansetron 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. “Ondansetron Detection Time.” https://drugpanels.com/detection/zofran/. Accessed 2026-09-10.
Sources
- SAMHSA drug testing resources and analyte specifications — Substance Abuse and Mental Health Services Administration — samhsa.gov
Detection windows describe typical ranges from the published literature and assay documentation; individual results vary. See our methodology.