Information only, not medical or legal advice. Struggling with substance use? SAMHSA National Helpline 1-800-662-4357, free, confidential, 24/7.
Home / DrugTestAnswers: Straight Answers About Drug Tests, Detection Times and Detox Products

DrugTestAnswers: Straight Answers About Drug Tests, Detection Times and Detox Products

Updated · By the DrugTestAnswers editorial team

drug test answers - laboratory testing equipment

Got a test coming up and your head is spinning? Pull up a chair. DrugTestAnswers is the site we'd hand a buddy who just got the "we'll need a urine sample" email: honest numbers from published research, plain talk about how the tests actually work, and no miracle promises.

See the 10-panel home drug test at TestClear →

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.

Urine test strip - drug test answers
Urine test strip. Photo: Wikimedia Commons, see image credits.

Where to start

Free tools and reference data

Use the detection window calculator, the BAC calculator or the THC estimator. Every number traces back to our sourced detection table (free CSV download) and the federal SAMHSA cutoff levels. New to the jargon? Try the glossary or the how drug tests work guide.

See the 10-panel home drug test at TestClear →

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.

The honest bit

We earn a commission when you buy from TestClear through our links. We still tell you when a product's claims aren't backed by evidence. We never coach anyone through DOT, federal, safety-sensitive, or court-ordered tests, because those exist to keep people alive. The only guaranteed way to pass a drug test is not to use, and the smartest cheap move is to test yourself at home first so nothing surprises you.

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See the 10-panel home drug test at TestClear →

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.

Straight talk, brother to brother.

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.