How does a saliva swab drug test work?

Answer

A saliva swab drug test is one of the most ineffective drug tests used. Some of the chemicals in marijuana can be detected with a saliva swab test for 1-3 days after use and no more. You are given a spongy swab that is attached to a stick, very similar to a lollipop and you put it in your mouth for a few minutes being sure to rub it up against the inside of the cheek. The sponge is then tested for chemicals that may have been left behind from drug use.
Q&A Related to "How does a saliva swab drug test work?"
By time, saliva tests detection period is short.
http://wiki.answers.com/Q/How_do_you_beat_a_saliva...
Here's a thought. How about not doing it that way you don't have to worry about not passing a drug test. Duhh
http://www.topix.com/forum/city/georgetown-ky/TPIL...
If your test is in 3 hours, you might be SOL. Good luck.
http://answers.yahoo.com/question/index?qid=200810...
A swab test drug screen is a type of drug test which is administered by taking a cotton swab and running it along the insides of a person's mouth to collect saliva. The saliva is
http://www.ehow.com/facts_5523602_swab-test-drug-s...
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