Compounds present in exhaled breath can act as a “fingerprint” for individuals, scientists say.
These “metabolites” represent the waste products of the body’s chemistry – but their uniqueness had never been shown.
A study in PLOS ONE suggests they could be as useful to medical diagnosis as those found in urine or blood.
Because a breath test is non-invasive and the results are instantaneous, it could prove even more convenient for example in anaesthesia or doping tests.
“I don’t …