Patent ID: 6106732
Filing Date: 2000-08-22
Classification: B01L,G01N,Y10T

Abstract:
A process for separating plasma or serum from mammalian whole blood which comprises the steps of:(a) applying a sample of said blood through a hydrophobically faced sample receiving hole positioned in a first, upper layer of hydrophobic material to a first layer of fibrous hydrophilic material which has been impregnated with a blood agglutinating or clotting agent so that it acts to retain red blood cells but not plasma or serum, which layer is sealed at its upper edges to said first layer of hydrophobic material; and(b) allowing the liquid portion of said sample to flow downwardly through said first layer of fibrous hydrophilic material into a second layer comprised of a different fibrous hydrophilic material which second layer is sealed at its lower edges to a second layer of hydrophobic material whereby said second layer comprised of a different fibrous hydrophilic material acts to retain the plasma or serum.