# K203695: NObreath®

- Pathway: 510(k) (Traditional)
- Applicant: Bedfont Scientific, Ltd.
- Decided: Dec 17, 2021 after 364 days
- Product code: MXA (System, Test, Breath Nitric Oxide)
- Device class: 2
- Regulation: 21 CFR 862.3080
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 6 generations back to DEN030001 (2003). 6 ancestors in all.
No later device cites it as a predicate yet.
0 of 7 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K170983: Niox Vero, Circassia AB (2017) Summary page 4.

## Indications for use
The NObreath® is a portable, non-invasive device for the measurement of Fractional Exhaled Nitric Oxide (FeNO) in human breath. The production of nitric oxide is often found to be increased in inflammatory conditions such as asthma. Measurement of FeNO by NObreath® is a method to measure the decrease in FeNO concentration in asthma patients that often occurs after treatment with anti-inflammatory pharmacological therapy, as an indication of the therapeutic effect in patients with elevated FeNO levels. The fractional NO concentration in expired breath (FeNO), can be measured by NObreath® according to guidelines for NO measurement established by the American Thoracic Society. NObreath® is intended for children, 7- 17 years, and adults 18 years and older. NObreath® 12 second test mode is for age 7 and up NObreath® 10 second test mode is for ages 7-10 only who cannot successfully complete a 12 second test. FeNO measurements provide the physician with means of evaluating an asthma patient's response to anti-inflammatory therapy, as an adjunct to the established clinical and laboratory assessments in asthma. The NObreath® cannot be used with infants or by children under the age of 7 as measurement requires patient cooperation. NObreath® should not be used in critical care, emergency care or in anesthesiology.

Source page: https://510kreport.com/device/K203695
Methodology: https://510kreport.com/methodology