How Long Does Cocaine Stay in Your System?
Cocaine detection windows vary by test type and use pattern.
Detection Windows
- Urine: 2–4 days (heavy use: up to 7 days)
- Blood: 1–2 days
- Saliva: 1–2 days
- Hair: up to 90 days
Factors Affecting Detection
- Amount and frequency of use
- Metabolism
- Kidney and liver function
- Hydration level
How Tests Work
- Tests for benzoylecgonine (cocaine metabolite)
- Initial immunoassay screen
- GC-MS confirmation for positives
Source: SAMHSA, NIDA, Mayo Clinic.
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