How long thc in blood

The strength of each dose of THC also matters. Without sensitive laboratory equipment, a person cannot reliably determine the strength of their marijuana. Since fat stores marijuana, people with higher body fat concentrations may metabolize marijuana more slowly than a person with less body fat. Body mass index BMI is one way to judge body fat. Typically, females have more body fat than males. This means that females may metabolize marijuana slightly more slowly. Dehydration increases concentrations of THC in the body.

While drinking lots of water is unlikely to affect a drug test significantly, severe dehydration might. Exercise will not significantly change the rate at which the body metabolizes THC. Exercising before a drug test, however, might. A small study of 14 regular marijuana users assesses the effects of 35 minutes of exercise on a stationary bike. The results conclude that THC concentrations increased by a statistically significant amount, suggesting that exercise right before a drug test may increase the likelihood of a positive test result.

The researchers believe that exercise may cause fat cells to release THC. For a drug test to be negative, the body must eliminate THC from the system, as well as metabolic chemicals that have links to THC.

People with faster metabolisms typically eliminate THC more quickly than those with slower metabolisms. Ultimately, there are only two strategies that work for this, and they are decreasing the concentration of THC in the marijuana and speeding up the metabolism.

Proper hydration can prevent a drug test from showing unusually high THC concentrations. For people whose test results are on the border of positive and negative, this means that being dehydrated may increase the chances of a positive result. There is no reliable way to speed up the metabolism. Exercise might help the body metabolize more THC, but exercising too near to a test may also cause a positive result.

There is no way to accurately predict the amount of time it will take an individual to metabolize marijuana and eliminate it from their bodies. Home tests can help people test themselves for the presence of marijuana in their system. For almost all people, marijuana should disappear or be very low in concentration within 30 days. For infrequent users, it may take 10 days or less for marijuana to leave the body. Marijuana tests are available for purchase online. So, while the active form of THC doesn't remain in your bloodstream for an extended period of time, THC metabolites can still be found in the body several weeks after use.

Recognized as the preferred method for cannabis drug testing, urine screenings are often used as a benchmark to detect for cannabis use. According to a May review published in Mayo Clinic Proceedings, weed can be detected in urine for up to three days in occasional users, five to seven days in moderate users, 10 to 15 days in daily users, and more than 30 days for chronic users who consume multiple times a day.

THC and its metabolites can also be detected in the saliva of occasional and chronic users. A study published in Drug Testing and Analysis looked at cannabinoids in oral fluid and found that THC metabolites were detectable in the saliva of occasional users for one to three days and chronic users for up to 29 days. There is mounting evidence that hair follicle drug testing methods are not able to accurately detect marijuana, as research published in Scientific Reports suggests that the presence of THC and THC metabolites can be transferred to the hair follicles of non-users through contact with hands, sweat, or exhaled smoke.

For example, if someone smokes a joint and exhales near someone who doesn't consume cannabis, THC can be transferred to the non-smoker's head or body hair. As for the detection period, the hair follicle drug test timeline is much broader than with urine and blood tests, sometimes detecting the presence of THC up to 90 days after use.

While the authors of the study stated that hair analysis is a viable method for detecting cannabis consumption, they also acknowledged that it's unreliable for detecting light cannabis use. Reviewed by Dr. Adie Rae, Ph. By checking this box you consent to Weedmaps' collection of your email address for the limited purpose of subscribing to Weedmaps' email communications. The information contained in this site is provided for informational purposes only, and should not be construed as medical or legal advice.

This page was last updated on June 22, Home Order Online New. Skip to content When we smoke or ingest cannabis, those unique plant compounds interact with our bodies. After smoking weed, cannabinoids and their byproducts remain detectable in the body, and in many cases remain well after the buzz wears off.

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Alcoholism is a chronic illness, affecting over a million people in the UK alone. In this section, we provide resources to help you better understand this illness, and what to do if you or a loved one are affected by alcoholism. This article was written by Boris MacKey. Cannabis stays in your system for around 30 days and can be detected in your bodily fluids during this period. It can stay in your hair for even longer: hair tests can detect cannabis use for up to 90 days.

But whether cannabis use shows up on a test depends on how much cannabis you used, and over what length of time. Drug tests are more likely to pick up on heavy and frequent use. Working out how long cannabis stays in your system, and whether it will be picked up by a drug test, is not an exact science. In this article, we go through some of the factors which determine the length of time cannabis stays in your system.

We also discuss different drug tests, how accurate they are, and how likely they are to pick up cannabis use. The main drug tests include saliva tests, urine tests, hair tests, and blood tests. These tests measure tetrahydrocannabinol, or THC, as well as other cannabinoids. According to one paper , cannabis can be detected in the blood for between 1 and 2 days.

Cannabis enters the bloodstream very quickly, especially when it is smoked with edible cannabis it may take longer to do so. It is then metabolised, and the by-products of this reaction can stay in the bloodstream for a while. One of the most common forms of drug test is the urine test. This is a popular form of test because it is relatively easy to carry out, does not need to be done in a laboratory setting, and is still quite accurate.

Urine tests can detect cannabis use for up to 30 days, although this figure corresponds to the heaviest and most frequent use several times a day. With infrequent use up to three times a week , a urine test will only detect cannabis for up to 3 days. More common use, when the user is smoking cannabis around four times a week, can be detected by a urine test 5 to 7 days after the event.

Cannabis metabolites can be detected in oral fluid for up to 29 days, in chronic users. For infrequent users, saliva tests can detect cannabis 1 to 3 days after use.

Oral fluid tests work by measuring cannabinoids such as THC tetrahydrocannabinol in the saliva. These cannabinoids enter the saliva after cannabis is smoked, inhaled, or sprayed into the mouth.

Hair tests are by far the most accurate form of drug test and can detect cannabis for up to 90 days after use.