Does anyone know the percentage of the test that you must pass in order to get a waiver for asthma for the AFA? I was told that you had to test 80%. Anything under 80% meant you tested positive for asthma. Is this the guideline that is used for the waiver dept? We already know that the candidate has a history of asthma, otherwise they would not be required to do the methacholine challenge. Right? Thanks for any information.