It’s this reason that many cannabis consumers don’t have to wait longer than a few days to show up clean on a blood test.
As psychoactive THC and other cannabinoids like to stay out of the bloodstream and into fat, levels of THC are not typically elevated for very long. However, blood tests are more commonly used to check for recent cannabis consumption. However, it is unclear whether or not this would change the levels of THC metabolites seen in the standard blood or urine tests. Interestingly, the first study found that the greater the BMI, the more THC is re-released into the bloodstream post-exercise. Blood levels of THC increased by 25 percent in these people. In a second study, published in 2014, six participants exercised for 45 minutes. In one 2013 study, 14 regular cannabis consumers had THC and THC-COOH levels blood tested. The amount of THC re-released into the blood is fairly small. Over time, cannabinoids are re-released into the bloodstream as fat cells burn. Cannabinoids are fat soluble, meaning that THC that isn’t directly used will travel quickly from the blood to fatty tissues for storage. THC Can be Re-released into the BloodstreamĬannabis is present in the blood for a shorter amount of time than in urine or hair. This means that THC and its metabolites will take longer to show up in the blood, and may be present for longer amounts of time. If being blood tested for this metabolite, you can trust that it will hang around a bit longer than the THC itself.Įdible cannabis must first be processed by the liver before entering the bloodstream. Peak THC-COOH is reached 81 minutes after consumption. After that, blood levels of THC begin to decline and other metabolites become more abundant. Peak levels of THC in blood plasma are reached with five to 10 minutes after consumption. The active compounds in the plant, called cannabinoids, are absorbed through the lungs and pumped through the heart, entering the bloodstream.įrom here, the compounds have easy access to the brain, where at least one, THC, has a psychoactive effect. When you inhale the herb, cannabis becomes detectable in the blood in high concentrations just seconds after consumption. A metabolite is a breakdown product of THC. Rather, many look for the presence of a certain THC metabolite called THC-COOH. Often times, tests do not look for the presence of the primary psychoactive in cannabis, tetrahydrocannabinol (THC) itself.
However, there are a few variables that may either speed up or slow down the amount of time cannabis compounds are present in the blood, including: In heavy consumers, this can take up to seven days. As a very general rule of thumb, cannabis stays in your blood for about one to two days after a single consumption.
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