Spirometry is a medical test that measures the volume of air an individual inhales or exhales as a function of time

  • Easy to perform above age of 6 – 8 years
  • Most informative, Very reproducible
  • Technically challenging to do


  • Diagnosing disease- Breathlessness, whistling sound heard from chest during episode of breathlessness, chest tightness, cough, sputum production
    • To screen individuals at risk of having pulmonary diseases like current or ex smoker, individuals in occupations with exposures¬† to injurious substances
  • Monitoring progression or stability of disease in asthma, COPD, ILD, drug induced lung diseases.
  • Evaluation of Disability or Impairment