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?"
Metabolites are contaminants that get in your blood as a result of drug use. They can be tested for the type of drugs used, but not how much or how long they have been used. Metabolites
http://www.ehow.com/facts_5501908_do-saliva-tests-...
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 ...
https://answers.yahoo.com/question/index?qid=20080...
Coke, Flake, Snow, Crack stay in your body for 2-5 days. Saliva. The general procedure is to keep the subject from drinking or inserting anything in the mouth for a period of time
http://wiki.answers.com/Q/How_far_back_does_the_mo...
Oral fluid drug tests are a popular choice with employers and with parents who want to test their teens for drugs. Among oral fluid drug tests, the swab type is the most common. The
http://www.livestrong.com/article/22809-swab-drug-...
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