Professor David Wong, from the University of California and the scientist behind the test, says that, if there are tumor signatures circulating in the test subject’s blood or saliva, the liquid biospy will detect it.

So far, the saliva test has been tested on lung cancer patients and has delivered “near-perfect” results, he shared while speaking at the American Association for the Advancement of Science‘s annual gathering in Washington

[UCLA video]: http://hspp.ucla.edu/wonglab/img/video/Salivary_Diagnostics_with_Credits_.V2_L23p.mov

Unclear what other cancers this kind of test is good for besides lung cancer.