I was given a methacholine challenge and right after two rounds the physician quit saying I did not have asthma. I comprehend that there are six rounds utilised in the test. I continue to have breathing problems and some physicians say it may well be asthma – other docs say no asthma? How challenging is asthma to diagnose?

Answer by Doc8
The diagnosis by this methacholine test is very sensitive and distinct. The diagnosis in an a non asthmatic is created quite early in the test.