http://www.primaryimmune.org/publications/book_pats/e_ch16.pdf
This is a great chapter on laboratory tests. It might be helpful for many of you, too. I find it helpful. It explains the lab evaluation of the immune system, normal vs abnormal lab values and then it goes into major categories of tests including: Lab evaluation for antibody Deficiency, Evaluation of cellular (T-Cell) immunity, evaluation of Neutrophil immunity, and lab evaluation of Complement
For information on Shwachman-Diamond Syndrome check out Shwachman-Diamond America