A member asked:

What factors could produce a negative methacholine challenge. detail please?

A doctor has provided 1 answer
Dr. Kristin Sokol answered

Specializes in Allergy and Immunology

Maybe not asthma: A 19 yo with a negative methacholine challenge. A methacholine challenge test is ordered when a diagnosis of asthma is suspected but cannot be proven by history or in-office simple spirometry. A negative test usually means there is not a diagnosis of asthma. Please see your physician to determine exactly what is going on.

Answered 2/19/2020

1.5k views

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