一位2 歲大的男童，自出生6 個月後反覆有中耳炎、細菌性鼻竇炎及肺炎，雖然施打卡介苗，直至目前並無任何關於卡介苗的併發症，除了一般常規的CBC/DC 檢查之外，你認為下列何種檢測最能查出病因？
Lymphocyte proliferation test including antigens and mitogens stimulation
Immunoglobulins level（IgG, A, M, E）& lymphocyte subsets
PMN function tests, including chemotaxis, nitroblue tetrazolium test, \mathrm{CD}_{11}/\mathrm{CD}_{18} expression及phagocytosis
\mathrm{CD}_{11}
\mathrm{CD}_{18}
HIV 1+2 Ab
