Heres some info i found that might help some people clicking on this thread for insight.

Oral Fluids
Saliva, an oral fluid, makes THC, the active ingredient in marijuana, difficult to identify. Only a tiny amount of THC is present in saliva during marijuana use. So, unless saliva is tested one to 14 hours after THC is inhaled or consumed, it is unlikely the drug will be detectable. It is also possible that a saliva test will not show THC was used at all, depending on the amount of the drug taken into the system.

Test and Accuracy
The saliva test is administered by swabbing the inside of the mouth, and the bottom teeth and gums for a minute or two, until enough saliva is collected for testing. It is the least accurate way to determine whether a person has been using marijuana, due to the inaccuracy of the test after a day post-use.

How Long Does Marijuana Stay in Saliva Tests? | eHow.com
uloveweed Reviewed by uloveweed on . Mouth Swab test help! Hello i am new here and have found alot good sound advice on how to pass a urine drug test, however I just found out that the test i have to take on Friday is going to be a mouth swab test! I am a heavy smoker, i dont smoke large quantities but i do smoke pretty much everyday. One way im preping is by not smoking for the next three days prior to the test. I would like to know if anyone has any other ideas on how to pass on of these. The little I've gained from researching online is that it is Rating: 5