Previous protocols of administration of recombinant human erythropoietin to patients with end-stage renal disease have been by the i.v. route. Because this method would be impractical for the continuous ambulatory peritoneal dialysis patient, we designed an i.p. dosing protocol in uremic rabbits to examine whether significant amounts of this hormone could be absorbed from the peritoneal cavity. Our results demonstrate that almost all of the erythropoietin is absorbed (or absorbed) during a prolonged dwell when administered undiluted by dialysate.
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