Test Results back, Friday and confused

[ptcgirl]

I received the lab results back from my dd12 and I'm so confused. She's had PANDAS since 2006 and Lyme since who knows. Her current lab tests show an Immunoglobulin A, QN Serum as LOW (46 mg/dl). Previously (in 2010 and 2008) it was in the normal range (66 and 62, respectively). The other odd thing is that her strep pneumo Igg has 4 under .35 and 8 under 1. (she had the vaccine as a baby). In 2010 she was over .35 for all of them. Why the changes?? What does this mean? I will (hopefully) talk to Dr. B on Monday, but I'm so confused. Has anyone else had similar issues? Any insight? Please help me get through the weekend.... All the rest of her test came back pretty normal. Thanks in advance for helping.