A member asked:

Will dulera (formoterol and mometasone) without a doubt cause a false negative on a methacholine challenge ?

4 doctors weighed in across 2 answers
Dr. Yun Tran answered

Specializes in Family Medicine

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

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Dr. Michael Sanders answered

Specializes in Pulmonology

It can: Any beta agonist can do it

Answered 5/17/2017

695 views

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