From what I can tell, a Dallas, Tx law firm is the first to throw its hat into the ring looking for plaintiffs for NxStage dialysate induced injury cases. The firm indicates that they are accepting claims in all 50 states, which would lead one to conclude that they would like to have a diverse plaintiff population so as to seek class action status in an lawsuit against the defendant(s).
http://www.schmidtlaw.com/nxstage-dialysis-fluid-recall-lawsuit