Abstract
The present study examines the adsorptive phenomenon of 1 alpha-hydroxycholecalciferol (1 alpha-OHD3) to peritoneal dialysis bags. One minute after injection of 1 alpha-OHD3 into the dialysis bags, a significant adsorption to the bags was observed in experiments where albumin was not added. A higher temperature (37 degrees versus 23 degrees C) in bags containing 13.6 mg glucose/ml resulted in less adsorption (P < 0.05). Adding albumin to bags at 37 degrees C with a glucose concentration of 13.6 mg/ml, reduced the adsorptive phenomenon significantly (P < 0.01). Bags tested at 37 degrees C with a glucose concentration of 38.6 mg/ml resulted in a significantly higher 1 alpha-OHD3 adsorption than bags containing 13.6 mg glucose/ml (P < 0.01). It is concluded that adsorption of 1 alpha-OHD3 to dialysis bags is affected by time, albumin, temperature and glucose concentrations. Substantial amounts of 1 alpha-OHD3 is retained by the peritoneal dialysis system when albumin is not added.
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