Dr. Amy Nett: If you see notably low levels of secretory IgA, and in the particular case that Chris showed in Lecture Nine of the stool testing presentations, the secretory IgA was not even detectable, so you do want to run a full immunoglobulin panel. An immunoglobulin panel, or Ig panel, is a blood test that you can run through LabCorp or Quest, and it’s going to provide you with levels of IgA, IgG, IgM, and IgE. If you go back to that specific presentation, Lecture Nine, there’s actually a picture of what an Ig panel looks like. That particular patient had his immunoglobulin panel run through LabCorp, but again, you can also run it through Quest. Again, what you’re really looking for on this panel is primarily what the IgA level is because some people do have a genetic deficiency in IgA production. That said, if the patients are producing normal IgA, you do need to think about how much stress is affecting them. That can also affect immunoglobulin production. But the starting place is doing an immunoglobulin panel.