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  2. Cannabis drug testing - Wikipedia

    en.wikipedia.org/wiki/Cannabis_drug_testing

    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] Urine testing is an immunoassay based test on the principle of competitive binding. Drugs which may be present in the urine specimen ...

  3. How long does marijuana stay in your system? What weed ... - AOL

    www.aol.com/long-does-marijuana-stay-system...

    Here's how long after smoking they can detect cannabis in your body, according to Medical News Today: Urine tests: One to 30 days after use Saliva tests: Usually within 24 hours but could detect ...

  4. Cannabinoid hyperemesis syndrome - Wikipedia

    en.wikipedia.org/wiki/Cannabinoid_hyperemesis...

    A urine drug screen can be useful for objectively determining the presence of cannabinoids in a person's system. [8] Cannabinoid metabolites (specifically 11-nor-Δ9-carboxylic acid) can be detected in urine for about 2 to 8 days with short-term use, and for 14–42 days of chronic use. [24]

  5. 11-Nor-9-carboxy-THC - Wikipedia

    en.wikipedia.org/wiki/11-nor-9-Carboxy-THC

    11-COOH-THC has a long half-life in the body of up to several days (or even weeks in very heavy users), [4] [5] [6] making it the main metabolite tested for blood or urine testing for cannabis use.

  6. Marijuana users found to have lead and another heavy metal in ...

    www.aol.com/news/marijuana-users-found-lead...

    Marijuana users may have elevated levels of lead and cadmium in their blood and urine, a study shows. The heavy metals are linked to long-term health issues.

  7. Is it safe to drive after taking a cannabis edible? Here's ...

    www.aol.com/lifestyle/safe-drive-taking-cannabis...

    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 ...

  8. 11-Hydroxy-THC - Wikipedia

    en.wikipedia.org/wiki/11-Hydroxy-THC

    Like Δ 9-THC, 11-hydroxy-THC is a partial agonist at the cannabinoid receptor CB 1, but with significantly higher binding affinity (K i = 0.37 nM compared to Δ 9-THC K i = 35 nM). [7] With respect to cAMP inhibition at CB 1 it displays a similar efficacy to that of Δ 9 -THC (EC 50 = 11 nM vs. EC 50 = 5.2 nM, respectively), but a lower ...

  9. Tetrahydrocannabinol - Wikipedia

    en.wikipedia.org/wiki/Tetrahydrocannabinol

    THC and its 11-OH-THC and THC-COOH metabolites can be detected and quantified in blood, urine, hair, oral fluid or sweat using a combination of immunoassay and chromatographic techniques as part of a drug use testing program or in a forensic investigation. [57] [58] [59] There is ongoing research to create devices capable of detecting THC in ...

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