From NIST and the University of Colorado ~ "Diagnosing life-threatening diseases could soon be as easy as breathing".
A bit of medical research going on that's well worth keeping an eye on! Like Shane says, this could become common use within my working lifetime ~ roll on!! :D
And another link which includes a PodCast. :)
http://www.colorado.edu/news/r/e4e9b799127415da5107a93c5f318462.html