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Core Topics => Drugs => Cocaine => Topic started by: Chip on December 19, 2025, 04:39:21 AM
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[title]Urine Drug Testing – Cocaine & Methamphetamine (MA)[/title]
Scope
This page covers typical urine detection windows for cocaine and methamphetamine (MA), including chronic-use scenarios. Times assume standard lab immunoassay cut-offs.
Cocaine
What is detected:
• Benzoylecgonine (main metabolite)
• Cocaine itself clears very fast
Detection window (urine):
• Single / occasional use: 2–3 days
• Heavy or repeated use: 5–7 days
• Extreme binges (rare): up to 10–14 days
Notes:
• Cocaine has one primary metabolite
• Short-lived compared to stimulants like MA
• Most users are clear within 72 hours
Methamphetamine (MA)
What is detected:
• Methamphetamine
• Amphetamine (active metabolite – this is the limiter)
Detection window (urine):
• Single / light use: 2–4 days
• One-day heavy use: 4–6 days
• Multi-day binge (2–4 days): 6–8 days
• Chronic / high-dose use: 8–10 days
• Outliers (daily, long-term use): up to 14 days
Why MA lasts longer than cocaine:
• Converts to amphetamine
• Amphetamine accumulates with repeated use
• Chronic use causes metabolite stacking
Route of Use
• IV / smoked: slightly longer tail
• Nasal: middle
• Oral: slightly shorter
Frequency and total dose matter far more than route
Urine pH & Hydration
• Alkaline urine = slower excretion
• Acidic urine = faster excretion
• Labs account for dilution; hydration does not “cheat” tests
Rule of Thumb
• Cocaine: usually clear in ≤3 days
• MA single use: ~3–4 days
• MA binge: ~7 days
• MA chronic: 10+ days possible
Important:
Long detection times are driven by chronic daily use without breaks, not isolated doses.