CF Limbo-Update on immunodeficiency

My 11 year old son has been in limbo for 5 years now. I've posted here before but I have new information. Stomach pain started at age 7. Chronic sinusitis and bronchitis. Cultured stap and h flu so far. PI diagnosed at age 8 via pancreatic stim test. Enzymes treated for 8 months with improvement until age 8 when acute event of partial SBO and acute pancreatitis landing him in hospital for one month. He is treated at Boston Children's hospital via the CF center. Conflicting opinions so enzymes were removed. Currently he is 9th percentile for height with decent BMI. DNA sequencing done 5 years ago finding 2 copies of M470V and 5T/12TG and 7T/11TG. New information. Tested negative for PCD (not a surprise) and did an immunology panel. Nothing interesting EXCEPT Strep Pneumo Ab, IgG, 23 Serotypes. 21 out of 23 serotypes are far below normal range, like 10 fold in many serotypes. 1/2 normal serotypes is barely normal. He had Prevnar 7 as an infant. Dr suggests running hflu panel as well. So now what?? How many people with no underlying disorder have results like this? If he has immunodeficiency, this could be another piece to the CF puzzle. Welcome any thoughts.
Source: Cystic Fibrosis Newly Diagnosed Forum - Category: Respiratory Medicine Authors: Tags: Newly Diagnosed Source Type: forums