CD4 and Diarrhea: CD3+ level was 1100 (622–2402 cells/uL), CD4+ level was 247 (359–1519 cells/uL), CD8+ level was normal at 543 (187–781 cell/uL), and NK cell level was mildly decreased at 74 (6–467uL), during an immune workup for recurrent pulmonary infections and chronic diarrhea few years later.