Is low WBC common 16 days after ivig? Wbc 2.7; abs neut. 62; %'s seg23; lymph60; eosin7. History - WBC 3.5; abs neut 2.6; %'s seg74; lymph15; eosin 0

Possibly, . Neutropenia could be one of the complications, with some risks fir infection, however low. Talk to your immunologist or pcp. Thus article may help some what..., http://www.Ncbi.Nlm.Nih.Gov/m/pubmed/14646610/.
Not typically. What is the clinical context? Is the ivig being given for hypogammaglobulinemia, or is there something else going on?