Making a diagnosis, and knowing what tests you need to perform Diagnosing asthma in adults The information in this section will help you to understand the fundamentals of diagnosing asthma in primary care. Objective diagnostic testing for healthcare professionals Everything you need to know about spirometry, peak flow and FeNO testing You must have JavaScript enabled to use this form. Did you find this information useful? Yes No Why? We use your comments to improve our information. We cannot reply to comments left on this form. If you have health concerns or need clinical advice, call our helpline on 0300 222 5800 between 9am and 5pm on a weekday or email them. Leave this field blank Page last reviewed: 10 June 2024 Next review due: 10 June 2025
