How Long Does Weed Stay In Your Blood?

As a very general rule of thumb, cannabis stays in your blood for about one to two days after a single consumption. In heavy consumers, this can take up to seven days.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:Individual metabolismFrequency and amount of cannabis consumed

The detection limits of the ordered testBody mass indexWhat is being tested (is the test looking for THC or a THC metabolite?)Consumption method (edibles take longer to clear)For moderate to heavy consumers, it is recommended to abstain from cannabis for at least one week prior to a blood test. Often times, tests do not look for the presence of the primary psychoactive in cannabis, tetrahydrocannabinol (THC) itself.

Rather, many look for the presence of a certain THC metabolite called THC-COOH. A metabolite is a breakdown product of THC.When you inhale the herb, cannabis becomes detectable in the blood in high concentrations just seconds after consumption. The active compounds in the plant, called cannabinoids, are absorbed through the lungs and pumped through the heart, entering the bloodstream.

From here, the compounds have easy access to the brain, where at least one, THC, has a psychoactive effect.Peak levels of THC in blood plasma are reached with five to 10 minutes after consumption. After that, blood levels of THC begin to decline and other metabolites become more abundant.Peak THC-COOH is reached 81 minutes after consumption.

If being blood tested for this metabolite, you can trust that it will hang around a bit longer than the THC itself.Edible cannabis must first be processed by the liver before entering the bloodstream. 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.


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