Talk:Methacholine challenge test

Article title
The title of this article is misspelled. The substance in question is methacholine, not metacholine. I don't know how to go about fixing a misspelling in the title of an article, however. MeredithParmer 19:22, 6 April 2007 (UTC)

Purposes?
I know of this test only relation to military medical examination. Is there any reason other than testing fitness for harsh labor that would warrant such a test?