THC Urine Detection Estimator: How Long Might Weed Show Up?
THC is the tricky one, brother. It parks itself in fat and leaks out slowly, so how often you smoke matters far more than how much you smoked last weekend. Plug in your pattern below for a research-based range.
Ad: we may earn a commission if you buy through this link. Information only, not medical or legal advice. Tampering with a drug test can be illegal and usually counts as a refusal. The only sure way to pass is to not use.
Where these numbers come from
Clinical reviews report THC-COOH in urine for about 3 days after single use, 5-7 days with moderate use, 10-15 days with daily use, and more than 30 days in long-term heavy users at the standard 50 ng/mL cutoff. More sensitive 20 ng/mL tests catch it longer. See our detection table.
Why body fat matters
THC is fat-soluble. Regular users build a reservoir that releases metabolites over days to weeks. Hard exercise or sudden weight loss right before a test can release stored THC back into the blood.
Questions people ask
Can I speed THC elimination up?
No method is proven to clear stored THC quickly. Time is the only reliable factor.
Do home strips use the same cutoff as labs?
Many use 50 ng/mL, some 20 ng/mL. Check the box.
Ad: we may earn a commission if you buy through this link. Information only, not medical or legal advice. Tampering with a drug test can be illegal and usually counts as a refusal. The only sure way to pass is to not use.
No product can promise you a pass, and the only certain way is to not use. Tampering with a drug test can be illegal and is usually treated as a refusal. We never help anyone beat DOT, federal, safety-sensitive, or court-ordered tests. If substance use is getting on top of you, call the free, confidential SAMHSA National Helpline on 1-800-662-4357 (24/7, English and Spanish), or call or text 988 in a crisis. Source: samhsa.gov.