Quantitative evaluation of the stability and delivery of interleukin-1B by infusion.

The stability and delivery of IL-1 beta has been characterized in a polypropylene based syringe pump infusion system and in polyvinyl chloride based infusion bags, at concentrations ranging from 100 ng/mL to 1 microgram/mL. At higher concentrations (1 microgram/mL), minimal drug loss was observed in both systems. At low doses (100 ng/mL) in the syringe-pump system, the addition of 1% human serum albumin was necessary to prevent significant drug absorption to the polypropylene drug reservoir.