96269-6

LOINC 2.82

Fractional concentration of exhaled nitric oxide

FeNO VFr

Definition

  • The fractional concentration of exhaled nitric oxide, or FeNO, is used to assess the amount of inflammation present in the lungs. Inflammatory cells produce NO, so higher levels of NO indicate the presence of inflammation. The FeNO test is used to help diagnose allergic or eosinophilic asthma as well as monitor treatment efficacy. [https://www.aaaai.org/conditions-and-treatments/library/asthma-library/feno-test]

Component

  • Nitric oxide/Expired gas

Specimen / system

  • Exhl gas

Class

  • PULM

Property

  • VFr

Scale

  • Qn

Related names

  • Breath; ExG; Exhaled gas; Exhaled gas (=breath); Gases; Lung; NO; Percent; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; Volfr; Volume fraction

Index terms

  • Breath
  • ExG
  • Exhaled gas
  • Exhaled gas (=breath)
  • Gases
  • Lung
  • Nitric oxide/Expired gas
  • NO
  • Percent
  • Point in time
  • PULMONARY
  • Pulmonology
  • QNT
  • Quan
  • Quant
  • Quantitative
  • Random
  • Respiratory
  • Volfr
  • Volume fraction