A. Internal Quality control using manufacturer provided bead standard controls Normal (mean 957, range 670–1244 cells/µl) and Low (mean 192, range 132–252 cells/µl). (Site 1: Urban Laboratory, Site 2:
Cytokines and soluble immune activation markers that reflect cytokine activities in vivo are increasingly being measured in plasma, serum, and other body fluids. They provide useful diagnostic and pro