Does MDMA Show Up on Hair follicle test?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: On a hair follicle test, MDMA typically registers for up to 90 days after last use. ("Hair testing reads a 90-day archive: drugs enter the shaft via the bloodstream during growth (~0.5 inch/month), locking in use-history that washing can't erase. Head hair standard segments assume 1.5-inch cuts; body hair extends lookback unpredictably. Single exposures sometimes fall below segment thresholds — chronic use writes loud chapters.",)
How hair follicles testing catches MDMA
("Hair testing reads a 90-day archive: drugs enter the shaft via the bloodstream during growth (~0.5 inch/month), locking in use-history that washing can't erase. Head hair standard segments assume 1.5-inch cuts; body hair extends lookback unpredictably. Single exposures sometimes fall below segment thresholds — chronic use writes loud chapters.",)
Urine: 500 ng/mL initial (when included); 250 ng/mL confirm (MDMA or MDA).
Compare all specimens
| 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 |
Context worth knowing
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.
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Does Molly Show up on a Hair Drug Test?
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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)