In a study of 484 people (99 with stomach cancer), Israel’s NaNose breath detector gave an 80% accurate diagnosis – matching far more expensive, slower and invasive alternatives. NaNose (developed by Technion’s Dr Hossam Haick) also detected pre-cancerous growths that needed attention.

http://www.timesofisrael.com/israeli-developed-breath-test-catches-stomach-cancer-early/

http://gut.bmj.com/content/early/2015/03/09/gutjnl-2014-308536.short?g=w_gut_ahead_tab