5 doctors weighed in:

How accurate is the methacholine challenge test for asthma?

5 doctors weighed in
Dr. David Shulan
Internal Medicine - Allergy & Immunology
4 doctors agree

In brief: Pretty good

The test is fairly accurate.
A common cold within 6 weeks before the test can cause a false positive. Many people with nasal allergies will have a positive test in season and a negative test outside the season.

In brief: Pretty good

The test is fairly accurate.
A common cold within 6 weeks before the test can cause a false positive. Many people with nasal allergies will have a positive test in season and a negative test outside the season.
Dr. David Shulan
Dr. David Shulan
Thank
Get help from a real doctor now
Dr. Aaron Milstone
Board Certified, Internal Medicine - Pulmonology
23 years in practice
1M people helped
Continue
108,000 doctors available
Read more answers from doctors