Breathing tests (spirometry and / or measurement of FENO) are also often performed during the consultation, to measure the capacity of the lungs and health of the airways.
In some cases, further investigations may be recommended, for example a CT scan of the lungs or more detailed breathing tests. If convenient, it may be possible to perform a CT scan immediately after the consultation. Full reports of CT scans are not usually take a couple of days to finalise. Blood tests may also be requested.
The cost of such investigations is usually covered by insurers, for those who have cover (see Tariffs). Some people who are self-funding prefer to be referred back into the NHS in the event that further investigations are required, which may be possible by arrangement with your GP.