Question for the "Docs" on here: When you find out that someone has an IgA deficiency what first comes to mind? Is this something that is really bad and makes you go "oh no" or just kind of mild and not that big of a deal from a medical professionals standpoint? Also, is this something that is disqualifying? Thanks!

Never heard of it in the flying world. I would have to start reading. My guess is it's in the MISC column and will be disqualifying...maybe only at certain levels or if it has caused problems. My be waiverable if it's not a clinical issue...i.e. no symptoms, no problems, just there.