8 thoughts on “About Mouth Swab Drug Testing

  1. Is the employment mouth swab drug test accurate for marijuana?
    I may have a job interview and a mouth swab drug test at Tom Thumb tomorrow. I took 5 hits out of a bong a week ago. And I haven’t smoked about a month and a half prior to that. I heard that the mouth swab drug test doesn’t come up positive for marijuana, is this true?

    • It is and you will pass!
      Saliva tests are accurate but only test back 3 days.
      The mouth swab can come up positive. Tests differ in range 48 to 72 hours.

  2. How do I pass a mouth swab drug test in 24 hours?
    How do I pass a mouth swab drug test in 24 hours? Can I drink tons of water like with a UA test? Scrape my mouth?

    • I’ve been researching the swab test myself and this is the most informative info I have found but don’t rely on this and use anything prior to testing. Hope this helps.

      The Oral Fluid Drug Test detection time (Swab Test)
      Cocaine (COC) up to 24 hours
      Amphetamine (AMP) up to 72 hours
      Methamphetamine (mAMP) up to 72 hours
      Opiates (OPI) 24-48 hours
      Marijuana (THC) up to 14 hours

  3. How does a mouth swab drug test work?
    I’m going to have to take a mouth swab drug test for a new job and I was wondering what it would be all about. I have no reason to worry about whether or not it will come back postive. I’m just wondering what they are testing for, and how long it usually takes to get the results back. Also is it typically done in a Doctor Office?

    • The saliva test is actually the most “lenient” of all the drug tests. Basically, when you smoke, say, marijuana, many of the particles you breathe in will contact your saliva, and some of them will “stick” to it.
      So, when the swab picks up some saliva, it will also ‘grab’ some of the smoke particles that landed in your saliva, and if such narcotics are detected in a high enough *concentration*, then the test will return positive.
      For some opiates and cocaine, some of the particles from the blood will enter into the saliva, making for a longer test period, of maybe 2-3 days at most. For anything smoked, the test is only good for 12-16 hours tops.
      IIRC, it is one of the cheaper tests, and results come back quickly.

  4. How effective are the mouth-swab drug screenings?
    I just applied for a job that uses the mouth-swab drug tests. I have heard from a few people that these aren’t as accurate as urine screening and you could even pass by not smoking cannabis for as little as 3 days before the test. Is this true?

    • Usually there’s a 48 hour window where the swab test will detect drug use. It’s really testing for very recent use. You should stop smoking now, just to be safe though. It sounds like your test is a few days off.

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