How Long Does MDMA Stay in Your system (all test types)?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: Most people clear MDMA from your system (all test types) within varies by usage pattern of last use — heavy or daily use stretches that window substantially. Urine: 500 ng/mL initial (when included); 250 ng/mL confirm (MDMA or MDA).
MDMA detection windows by test type
Each specimen tells a different story because each samples different biology:
| Test type | Typical MDMA detection window |
|---|---|
| Urine | any: 1–3 days |
| Saliva (Mouth Swab) | any: 1–2 days |
| Hair Follicles | up to 90 days |
| Blood | any: ~12–24 hours |
('Detection windows differ dramatically by specimen type because each matrix captures different biology: urine accumulates EXCRETED metabolites for days, saliva traps recent parent-drug residue for hours-to-days, hair archives bloodstream exposure for months, and blood measures active circulation almost in real-time.',)
Why detection works this way
Classic 5-panel cups skip MDMA, but most 10/12-panel employment cups include it alongside amphetamines. MDMA structurally resembles amphetamine and shares the amphetamine assay family.
Molly pills frequently contain 'molly' substitutes (bath salts, cathinones) that standard panels also miss; conversely, confirmed MDMA positives cannot be explained away as contamination.
Detection is short — comparable to mixed amphetamine salts — because MDMA clears rapidly into MDA and inactive metabolites.
Testing cutoffs in plain language
Urine: 500 ng/mL initial (when included); 250 ng/mL confirm (MDMA or MDA). A specimen under the initial cutoff reports negative without further work; a screen above cutoff gets confirmed by mass spectrometry before anyone sees a positive.
Planning ahead? Our at-home drug test guide covers retail kits that mirror lab screens.
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No — MDMA is absent from standard drug panels. Full guide →
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How Long Does Molly Stay in your System Drug Test?
Urine detection runs roughly 1–3 days after last use; hair extends to ~90 days and saliva stays within 24–72 hours. Full breakdown in our detection guides.
How Long Does Mdma Show on Drug Test?
Urine detection runs roughly 1–3 days after last use; hair extends to ~90 days and saliva stays within 24–72 hours. Full breakdown in our detection guides.
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)