Brunati CCM, et al. - It was hypothesized that short dialysis sessions with NxStage System One cycler (NSO) might not allow adequate phosphate (P) removal. In this study, it was demonstrated that relative to bicarbonate dialysis (BHD), short, frequent home hemodialysis with NSO, on a 6/week-based prescription allowed higher weekly P removal. Furthermore, it was noted that with the dialysate calcium (Ca) concentration in use (6 mg/dL), total plasma Ca and iCa concentration increase was lower in NSO.