BloomHow Long Does THC Stay in Your System After Quitting?
One of the most searched questions among quitters: how long does the body take to fully clear THC? The answer depends on how much and how long you smoked, your metabolism and your body fat percentage. The reason is simple: THC is fat-soluble — it accumulates in fat tissue and is released gradually into the bloodstream even weeks after your last joint.
Typical detection windows
| Test | Occasional use | Long-term daily use |
|---|---|---|
| Blood | 1–2 days | up to 7 days |
| Saliva | 24–72 hours | up to 1 week |
| Urine | 3–7 days | 30–60 days (sometimes longer) |
| Hair | — | up to 90 days |
Note: "detectable on a test" does not mean "psychoactive". THC's mental effects fade within hours to a few days; what remains are inactive metabolites (THC-COOH) being cleared out.
The elimination curve
Elimination is fastest in the first days: most circulating THC is metabolized within the first week. Then the curve slows down, because residues stored in fat are released slowly. Roughly speaking, after 2 weeks about 85% of the work is done; the last traces in heavy users can take a month or more.
What actually speeds it up
- Regular exercise — mobilizes the fat where THC is stored (avoid intense workouts the day before a test: they can temporarily raise blood levels)
- Consistent hydration — supports kidney and liver function (chugging liters on test day doesn't "flush" anything)
- Quality sleep — most metabolic recovery happens at night
- Fiber-rich diet — part of the metabolites is eliminated through the gut
Informational content: for specific medical or legal needs, consult a professional.
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