What is the correct test to determine ADHD in adults?

Hi everyone,

My husband went and found a testing center that took our insurance without getting any recommendations from any professionals that we trust, and we just got the results today.  The test they gave him to determine ADHD was the Wechsler Adult Intelligence Scale, Fourth Edition (WAIS-IV).  Is this the test that is common in testing for ADHD?  I've spoken to a couple of people who don't seem to think it is, yet this "professional" said that based on the results there is no way that my husband has ADHD. 

When I asked her about her experience with working with adults with ADHD, I didn't get a straight answer and she kept referring to the behavior of children with ADHD with which she's worked.

Somehow I'm having trouble believing that a test of IQ is the end all/be all final word in whether my husband has ADHD or not.  Can anyone confirm one way or another?

If he doesn't have ADHD, then I really just have to conclude that he doesn't give a crap about me...

Thank you in advance!