After a Endoscope was performed in mid April, I was diagnosed with a yeast infection in my esophagus. That prompted the doctor to check my immunoglobulins. My immunoglobulin G is 644. I have enlarged cervical lymph nodes on the right side of my neck ( largest 2 were 2.6 and 2.7 ) which I noticed after endoscope. I have no symptoms of sinus infection nor have I had a cold. I tested negative for Strep and Mononucleosis. I had a case of poison ivy a couple weeks before endoscope and took a round of Prednisone. I was also diagnosed with a UTI which is what sent me to the doctor who checked my immunoglobulin levels. Have been prone to yeast infection for years. I have appointments with an ENT and an Immunologist in the next few weeks