It could: It could potentially cause a false negative methacholine test. Even asthma patients taking no medications for a while could potentially have a negative methacholine test for various reasons. That's why it is best to diagnose asthma based on symptoms and not a methacholine test.
Answered 3/24/2016
1.5k views
It can: Any beta agonist can do it
Answered 5/17/2017
695 views
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