Re: Methacholine test--is this the best/most accurate test for asthma?
From what I have read, it is the champ of asthma tests. Usually they don't use this test unless the other tests, such as the spirometry test were normal, but the doctor still suspected asthma.
It think it's about 88% accurate for positive results for asthma and 100% accurate for negative.
I might be wrong on those percentages but I think that it's close.