Does Amphetamines Show Up on Urine test?
Evidence-based answer reviewed against SAMHSA cutoffs and FDA assay documentation · Updated August 2026
Quick answer: On a urine test, Amphetamines typically registers for 1–3 days after last use. ('Urine remains the employment default because it balances cost, window-length and legal defensibility. Metabolite CONCENTRATIONS (not presence/absence) decide results against cutoff tables, which is why hydration status moves numbers and why validity checks (creatinine, specific gravity) police dilution attempts.',)
How urine testing catches Amphetamines
('Urine remains the employment default because it balances cost, window-length and legal defensibility. Metabolite CONCENTRATIONS (not presence/absence) decide results against cutoff tables, which is why hydration status moves numbers and why validity checks (creatinine, specific gravity) police dilution attempts.',)
Urine: 500 ng/mL initial screen; GC–MS confirm at 250 ng/mL requiring d-amphetamine (methamphetamine confirm additionally requires methamphetamine ≥250 ng/mL).
Compare all specimens
| Test type | Typical Amphetamines detection window |
|---|---|
| Urine | occasional: 1–3 days · regular: up to 4–5 days |
| Saliva (Mouth Swab) | any: 1–2 days (20–50 hours) |
| Hair Follicles | up to 90 days |
| Blood | any: ~12–24 hours |
Context worth knowing
Amphetamines are on every standard panel including the federal 5-panel. A prescription does not exempt you — it explains the result. Take your prescription (or pharmacy printout) to the collection site or have it ready for the Medical Review Officer call; verified prescriptions are reported as negative.
lisdexamfetamine is a prodrug: your body converts lisdexamfetamine into d-amphetamine after ingestion, so it produces a normal amphetamine-positive result indistinguishable timing-wise from mixed amphetamine salts.
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Will lisdexamfetamine Show up on a Urine Drug Test?
Yes — Amphetamines sits on standard 5/10/12-panel screens. Prescription? Declare it for MRO verification.
Does mixed amphetamine salts Show up on a Urine Drug Test?
Yes — Amphetamines sits on standard 5/10/12-panel screens. Prescription? Declare it for MRO verification.
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)