Recent studies have also investigated the duration of THC in the body. A 2009 report published in Drug and Alcohol Dependence tested cannabinoid levels among 33 chronic marijuana smokers. Researchers discovered one participant had THC in their system for at least 24 days after cessation. A study published in the Journal of Analytical Toxicology found evidence of a THC metabolite four weeks after last use among some heavy weed users. While most marijuana tests screen for THC in urine, the psychoactive chemical can be detected in other parts of the body as well.

Conclusion: How Long Does a Dab Stay in Your System?

Hair tests can detect THC metabolites for as long as 90 days and increase with frequency of consumption. Cannabis metabolites usually have a shorter window of detection in blood or saliva samples. However, studies show some frequent cannabis users’ blood will test positive even after seven days of abstinence. A 2017 study reports on testing where hair samples from 136 cannabis users self-reporting heavy, light, or no use of cannabis.

What to Know About How Long Marijuana Stays in Your System

The most common cutoff for most marijuana urine tests is 50 ng/mL, but cutoffs can be as low as 15ng/mL and as high as 100ng/mL—each of which result in widely different detection windows. We looked into published scientific studies about how long does weed stay in your system. Typically, weed will remain longer in hair and can be detectable for up to 90 days from the day of use. Tests can detect weed for up to 30 days in your urine, up to 24 hours in your saliva, and up to 12 hours in your blood. However, blood tests can detect THC metabolites for a few days to a few weeks, depending on how much you consume.

How long does THC stay in your hair follicles?

• Use your head when trying any of these techniques, and if you begin to feel ill, stop immediately.
• If a person is ready to quit cannabis use, they should make sure to take care of their body during the peak withdrawal period within the first week.
• The more THC the cannabis contains, the greater the effect on the brain.
• Daily smokers experienced the most cannabis withdrawal symptoms.

How long a THC high lasts and how long THC stays in your system are two very different things. There are some claims of “cannabis hangovers,” with anecdotal reports of lingering fatigue following cannabis use. The difference between occasional users and frequent users can be vast. So, if you are frantically scouring the web for solutions to clean your system fast, you may be out of luck. Marijuana, also known as weed, pot, or ganja, is a medicinal plant of the cannabis family.

How long does THC stay in your urine?

• Qualitative testing tells you if a substance is there or not.
• Regular exercise won’t change a drug test’s results, but exercising right before a drug test may increase the chance of a positive test.
• Six users displayed positive THC levels on the final day of abstinence.
• This can be a good approach, as dehydration will increase the concentration of your urine and could increase your chances for a positive result.

Scientifically speaking there are a great number of factors that determine how long does it take for marijuana to leave our bodies. If you estimate that you’ll fail a drug test, you should check out our article how long does weed stay in your system about Complete THC Detox to speed up the elimination of THC out of your body considerably. After helping out almost 200 people (in the comments), we have decided to put together a THC elimination calculator.

• Experienced journalist with a decade-long experience of researching cannabis.
• Just 5 days after eating an edible, 80 to 90% of THC gets flushed out but the remaining 10% can be detected for up to 4 weeks.
• It is by no means 100% “scientifically” accurate, and certainly is not a guarantee that you’ll pass a drug test — even if you follow one of the above recommendations.
• If you estimate that you’ll fail a drug test, you should check out our article about Complete THC Detox to speed up the elimination of THC out of your body considerably.
• When testing for drugs, someone may take a 1.5-inch hair segment to test for drug use during the past 3 months.
• When cannabis is consumed, THC levels temporarily rise in the body, which are detectable in blood tests from several hours up to a day after one usage.