THz analyzers for breath research

Nowadays the methods of exhaled breath analysis are developing all around the world. The exhaled breath analysis can result in a powerful tool for noninvasive medicine. The gas analyzers for exhaled breath diagnostics are presented. The analyzers are based on high precise spectrometers of the THz frequency range, which provide high resolution and sensitivity for detecting the wide set of substances. The spectrometers work on effects of phase-switching and fast sweep of frequency. The analyzers have been successfully applied for detection of various biomarkers (nitric oxide, acetone, ammonia, methanol, ethanol) in breath of conditionally healthy volunteers and patients.