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Online THC Calculator

NOTE!!! This calculator is made for informational purposes only. Remember, that nobody and nothing can say how long EXACTLY marijuana stays in YOUR body. It depends on a lot of factors, such as age, weight, metabolism, amount and potency of marijuana, effect of thc detox products etc. This calculator was based on the averaged information about half life of THC in human body. This isn't medical advice, so this website will not be held responsible if you are caught on a drug test.

50 nanograms of THC metabolites per milliliter defines a "presumptive positive" by NIDA (National Institute on Drug Abuse) certified labs. So, your THC level must fall below 50ng/ml marked with RED line to pass standard drug test.

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See also How To Pass A Urine Drug Test and How Long Does Marijuana Stay In Your System

THC level, ng/ml

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