NIOX Group Plc engages in the design, development, and commercialization of medical devices for asthma diagnosis, monitoring, and management worldwide. It offers NIOX VERO, a non-invasive and point-of-care system that comprises a small portable device and a range of consumables, including sensors, individual disposable mouthpieces, and breathing handles for the measurement of Fractional Exhaled Nitric Oxide (FeNO) level in patients. The company was formerly known as Circassia Group Plc and changed its name to NIOX Group Plc in September 2022. NIOX Group Plc was incorporated in 2006 and is headquartered in Oxford, the United Kingdom.