question around immune function

[junkyardjean]

Just looking for some thoughts on the results for IgG, IgM, IgA - dd had these done and they are considered in the "normal" range, but all three results are low normal (for example, range being 0.27-1.95, dd's result is 0.41).

 

We don't see doc for a bit, so I am loading up with info before we go - any experience/knowledge/words of wisdom on this? They are still normal, but I found it interesting that they were just barely so...