Using a mouth swab is a cheap and easy way for companies to perform routine drug testing. It’s also one of the easiest drug tests to pass if you’re a cannabis user. Let’s explore how long THC stays in your saliva, and what you can do to increase your chances of passing a saliva test.

In a urine test, what’s actually looked for is the metabolized form of THC, known as THC COOH. When you smoke, THC enters your bloodstream and is metabolized fairly quickly, but some THC gets stored in your fat cells. This means that THC COOH is detectable using urine analysis for as long as three months after use.

However, a saliva test detects THC itself, and it can be untraceable in your saliva within eight hours. So technically speaking, you could pass a saliva test the very same day you blazed. However, smoking does coat your mouth with THC, which can linger for longer than eight hours. So to be safe, abstaining for about two days will ensure you beat the test and pass.

In order to further increase your chances, or if an unexpected test arises, there are a few things you can do in order to try and eliminate THC from your saliva.


Drink lots of water

This will help to flush out any remaining THC. Chug some, swish some, and spit out.


Eat fatty foods

THC is lipophilic, meaning it bonds to fat. Therefore, by eating fatty foods you may be able to decrease the presence of THC in your saliva.


Introduce an adulterant

An adulterant is any substance that can interfere with a drug test. In the case of saliva tests, one of the best adulterants is hydrogen peroxide. Simply swish before you test and keep those fingers crossed!


Saliva tests are the easiest to pass and are also the least accurate. So, even if you don’t follow the advice in this article, you still have a high chance of passing. So don’t fear the saliva test—just be prepared.

  Posted: Tuesday, March 6th, 4:24am 8 months ago
Profile PictureWritten By: Shasta Nelson

Shasta Nelson is a California Native and a cannabis connoisseur. She's been involved in the industry at every level since she was a teenager. Currently she provides content for Roottie, DOPE Magazine, and Terpenes and Testing. She's also a creative writer, with a graphic novel underway.

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