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THC, the main psychoactive component of cannabis, may only be detectable in saliva and oral fluid for 2–24 hours in most cases. [8] [9] The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10]
The THC molecule, and related compounds, are usually detectable in drug tests from 3 days up to 10 days. [citation needed] Long-term users can produce positive tests for two to three months after ceasing cannabis use (see drug test). [17]
A 2022 study published in the Journal of Psychopharmacology found that participants given oral cannabis (the lab-grade alternative to an edible) showed low blood THC concentration at the height of ...
Two main questions arise in the law surrounding driving after having ingested cannabis: (1) whether cannabis actually impairs driving ability, and (2) whether the common practice of testing for THC (the main psychoactive substance in cannabis) is a reliable means to measure impairment.
Any use of marijuana could raise the risk of heart attack and stroke, even in people who don’t use cigarettes or don’t have existing heart disease, a new study finds.
[23] [33] THC is detectable within seconds with inhalation and peak levels of THC occur after 3 to 10 minutes. [3] [33] Smoking or inhaling THC results in greater blood levels of THC and its metabolites and a much faster onset of action than oral administration of THC.
Blood THC levels typically peak quickly after smoking cannabis, reaching upward of 100 nanograms per milliliter of blood within 15 minutes of smoking it. Then, THC levels drop rapidly to less than ...
Tetrahydrocannabinolic acid (THCA, 2-COOH-THC; conjugate base tetrahydrocannabinolate) is a precursor of tetrahydrocannabinol (THC), an active component of cannabis. [1]THCA is found in variable quantities in fresh, undried cannabis, but is progressively decarboxylated to THC with drying, and especially under intense heating such as when cannabis is smoked or cooked into cannabis edibles.