- Other tests available in secondary care include:
- Indirect testing for bronchoconstriction, for example more than 15% decrease in the forced expiratory value in 1 second after 6 minutes of running.
- Testing for bronchial hyper-responsiveness using histamine or methacholine.
Basis for recommendation
These recommendations are based on the British guideline on the management of asthma: a national clinical guideline [SIGN and BTS, 2011].