The saliva test for HIV provides results in about 20 minutes while the person waits at the testing facility.

(HIV) is usually diagnosed with a blood test. Cultures for HIV are possible, but rarely needed for diagnosis.The FDA also approved an HIV test in 2004 that can detect HIV in saliva.

HIV's are found everywhere.

A saliva test may be available at your doctors office. It is claimed to have 99% accuracy, but I would question that high of an accuracy level.

Yes. Saliva is a body fluid and in certain circumstances HIV can be transmitted through it.
No, there is not enough HIV in saliva to be transmitted.