Data is power, and these four potentially-revolutionary blood- or breath-testing companies could help generate next-generation medical insights:
University of Southampton, Sharp Labs Europe is developing a mobile lab-on-a-chip 5-10 years
Integrated Diagnostics has a "sniffer" test to look for lung cancer. http://www.indidx.com/articles
V-chip to test 50 different blood chemical markers with microfluidics is still in development. 5-10 years
Theranos lab testing is already cheap and easy online, but they have recently been investigated by the FDA for failing to prove that their tests are accurate.