Blood separation device under low pressure conditions

Abstract From the Canadian patent

A method for separating plasma from red blood cells and a device utilizing the method in which a lowpressure filter is interposed in a pathway between an inlet port and a reaction area. The sole driving force for the movement of plasma from the filter to the reaction area is capillary force provided by a tubular capillary. The filter is selected from glass microfiber filters of specified characteristics which, can operate in the absence of agglutinins and filters, capable of separating agglutinated red cells from plasma, which require the use of an agglutinin.