Comparison of the radioiodinated serum albumin (RISA) dilution technique with direct volumetric measurements in animal models of peritoneal dialysis
Background: Rat models of peritoneal dialysis (PD) are useful for studying the physiology of peritoneal transport and evaluating new osmotic agents. Intraperitoneal (IP) solute concentrations and their evolution over time are easy to measure, but IP volume (IPV) is not. Direct volumetric measurements are the "gold standard;' but they are expensive and do not allow for repetitive measurements in th
