I think Ellie's low normal IgA might be of some significance. How much, I don't know. Not that there is anything to do about it, that I know of, but it might mean she is more susceptible to general illness (esp. ear, throat, lung), autoimmune disease, and allergies.

It seems that way for my low IgA daughter, who hovers just above to just below the low range cut off. I don't think you'd see a doctor getting concerned about this result, but review this... and consider if she might lean toward some of the things mentioned. Michael is IgA deficient? I think it is a spectrum sort of thing, and that low IgA matters a bit too.

http://www.primaryimmune.org/pubs/book_pats/e_ch04.pdf

Cara