How Long Does Marijuana Stay in Your Saliva?

salivaDrug tests are an unfortunate reality of many workplaces. However, you can consider yourself lucky if you’re a cannabis consumer who has been hired for a job that only tests for saliva (a swab test). Compared with a urine test, or an even more invasive hair test, marijuana leaves the saliva much quicker.

The presence of tetrahydrocannabinol (THC), a compound found in cannabis, is what most tests are searching more. If you’re a daily smoker, studies have shown that in most instances it should be completely out of the system after 72 hours of abstaining from using cannabis. In some instances, a daily smoker can pass a test in a shorter amount of time. In most all instances, though, 72 hours is enough time for the THC to leave the system.

However, in some rare cases it can take up to a week for cannabis to leave the saliva. It never, however, will take longer than a week.

Factors:

Below are some of the factors that will effect how long THC does stay in your saliva:

  • Potency: Unsurprisingly if you consume cannabis with a high percentage of THC, it’s likely to stay in your saliva longer.
  • Frequency of Use: Other than potency, this is the most important factor in determining how long THC stays in your saliva.. If you only smoke once a month or even once a week, you very well may pass a saliva test after 24-48 hours of abstaining. If you smoke daily, it will likely be out of your system after 48-72 hours.
  • Metabolism: If you have a “fast metabolism”, you’re body is likely to flush the THC from your saliva quicker.

By comparison, marijuana can be detected in the urine of a daily smoker for up to two months. When it comes to a hair follicle test, THC can be detected in some instances six months or longer after someone last use marijuana.

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26 comments

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    • Cavin on June 25, 2018 at 8:30 am
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    I smoked 2 days ago and have a swab tomorrow that will be lab tested I’ve been brushing 3 to 4 times a day and swishing peroxide and Listerine afterwards will I be ok or will I fail the mouth swab

    • Peraon on June 7, 2018 at 12:42 pm
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    I smoked like 4 hrs ago is it possible to pass a mout swab ??

    • Peraon on June 7, 2018 at 12:41 pm
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    I smoked like 4 hrs ago is it possible to pass a mout swab

    • Anonymous on February 24, 2018 at 8:44 am
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    I have not smoked weed in 5 years and have a swab test tomorrow!!! Do you think I will pass?? Please help meeee!!

    • Trudy zytko on October 17, 2017 at 7:09 pm
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    I have to take a,swab test on Thursday on Oct 19 2017 i havnt smoked weed for three weeks am I good

    • Anonymous on September 11, 2017 at 6:42 pm
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    That is b.s my boyfriend stopped smoking for 12 days and still failed

      • Dana Torres on July 27, 2018 at 8:18 pm
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      I agree with this i have stopped for 4 n 5 days and still failed doing every trick known to man to pass…..

    • Matthew on August 11, 2017 at 5:35 pm
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    If i smoke today will i pass my saliva test on tuesday??

  1. Hi I have been clean for about 62 days . I was a heavy smoker. I have a saliva swab test tomorrow . Do you think I will pass!??

    • Dawn on June 28, 2017 at 11:43 am
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    Congratulations!

    • Dawn on June 28, 2017 at 7:43 am
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    That’s great news ☺ congratulations!

    • Dawn on June 21, 2017 at 7:49 pm
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    Yea let us know how it turns out

      • Nicole on June 28, 2017 at 7:20 am
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      I guess I’m good! Got a call about orientation!

    • Dawn on June 20, 2017 at 3:21 am
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    14 days should be plenty of time. It’s odd that they sent it to a lab, however. The companies use the oral swab because they show results immediately and don’t need to be sent to the lab.

    • Dawn on June 20, 2017 at 3:19 am
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    14 days should be plenty of time. It’s odd that they sent it to a lab, however. The companies use the oral swab because they show results immediately and don’t need to be sent to the lab.

      • Nicole on June 21, 2017 at 7:24 pm
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      I agree it was odd. I live in Louisiana and they use a lab in Missouri. Seems unusual.

        • Nicole on June 21, 2017 at 7:26 pm
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        I will update when I get results. Its been a week still haven’t heard anything.

    • Nicole on June 19, 2017 at 8:27 pm
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    I abstained from smoking for 14 days. I had the swab It was sent to the lab. Should I still pass or should I be worried?

    • Marcos on May 31, 2017 at 6:20 pm
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    All u guys are dumb all I’m worried about is getting my results tomorrow and for it to come out clean!

      • Nicole on June 19, 2017 at 8:29 pm
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      How long did you not smoke? Results right there or did it get sent the lab? Did you pass?

    • Anonymous on May 13, 2017 at 2:49 pm
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    Is this a reliable scource of information?

    • Dawn on May 1, 2017 at 4:59 am
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    I love it when people that can’t spell call other people dumb ass

    • Anonymous on April 28, 2017 at 4:21 pm
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    And your kinda a dumb ass that aparently dose not smoke that much

    • Anonymous on April 28, 2017 at 4:20 pm
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    And your kinda a dumb ass that aprantly dose not know anything

    • Anonymous on April 12, 2017 at 4:50 am
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    Your wrong lady. And kind of an idiot.

    • Sarah on October 25, 2016 at 2:16 pm
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    Wrong about the urine. If you drink enough water, weed can not be seen in a urine test for the next three days, or two weeks. Depending on how much you smoke. However, I had a friend who got tested for THC a day later my friend smoked it. It varies on how much you smoke.

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