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A member asked:
Dr said that i needed a 12% improvement on methacholine test for asthma diagnosis. is this number arbitrary? can i still have asthma if negative?
3 doctors weighed in across 2 answers
Mixed up: Methacholine challenge test MCT, is different from spirometry, 12 % increase in PEFR or FEV1 after bronchodilator administration is indicative of airway bronchospasm that responded to bronchodilation, it can aid in the diagnosis of asthma, which is mainly a clinical diagnosis. Criteria for asthma diagnosis on MCT are different, the test is cumbersome and not commonly used to diagnose asthma
Answered 7/28/2017
603 views
Mgt: An uploaded report may be viewed by inbox consultation. You may still have asthma, and your allergic history is associated with asthma in some patients.
Answered 7/28/2017
603 views
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