The LifePoint saliva test is cheaper and much faster than drug tests sent to laboratories, including those for saliva.

FORBES: LifePoint Makes New, Portable Drug Test

For instance, someone with fever could use a disposable kit to test saliva to find out what is wrong with them.

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Project ScanaFlu is a low-cost disposable cartridge that can test for cold and flu symptoms by testing saliva.

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But unlike LifePoint's gadget, Avitar's test does not indicate the amount of drugs or alcohol present in saliva.

FORBES: LifePoint Makes New, Portable Drug Test