The product OraQuick has been approved by the FDA in 2004 and is...

The product OraQuick has been approved by the FDA in 2004 and is CLIA waived. It is 99.6% sensitive and 99.3% specific with oral fluids.
http://www.orasure.com/products/default.asp?sec=2&subx=2&cid=2&prd=138

It is the only FDA and US CDC approved product for rapid testing for HIV in oral fluids.
http://www.cdc.gov/hiv/rapid_testing

Singapore and Mexicon are the only two countries that have approved the use of the test outside the USA.