![A schematic presentation of the PExA® instrument (after Larsson et al [21]).](https://iopscience.iop.org/1752-7163/12/1/016011/downloadHRFigure/figure/jbraa8b25f2)
A schematic presentation of the PExA® instrument (after Larsson et al [21]).
Testing for drug use and disease in humans could soon be much simpler, thanks to new Swedish research. Whereas drug tests currently rely on blood or urine samples, researchers from the University of Gothenburg have identified a method for drug testing by analysing various compounds in exhaled breath. They demonstrate how collecting and analysing externally-produced compounds in the lining fluid of the airways allows for non-invasive testing and monitoring.
Dr Göran Ljungkvist said: “Exhaled breath contains particles carrying non-volatile substances. The main components, lipids and proteins, are derived from the respiratory tract lining fluid...
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