The next time your doctor tells you to breathe deeply, she might be doing more than listening to your lungs.
Breath tests for a range of diseases are currently in development. The Journal of Thoracic Oncology reports this month that researchers have established an 88% accuracy in a new breath test for lung cancer.
Dr. Cristina Davis of the University of California is developing a breath monitor for children with asthma which can assess the level of inflammation in their lungs.
Other breath tests, such as that for bacteria that cause peptic ulcers, require the patient to swallow tagging chemicals beforehand.
Star Trek diagnostics come one step closer.