Process and composition for separating plasma or serum from whole blood
AssigneeBoehringer Mannheim GmbH
InventorsPeter Vogel, Hans-Peter Braun, Dieter Berger, Wolfgang Werner
Life of this patent
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Abstract
A composition and process for permitting the separation of plasma or serum from whole blood. The composition includes glass fibers having an average diameter of from 0.2.mu. to 5.mu. and a density of 0.1 g/cm.sup.2 to 0.5 g/cm.sup.2. The process includes the steps of slowly trickling whole blood onto one side of a layer composed of the composition of glass fibers, whereby plasma or serum separated from the blood becomes available at another side of the layer. The total volume of the plasma or serum separated from the blood is limited to at most 50% of the absorption volume of the glass fiber layer.
Claims16
A process for separating plasma or serum from whole blood, comprising:
- trickling blood slowly onto a layer of glass fibers with an average diameter of 0.2 to 5.mu. and a density of 0.1 to 0.5 g./cm.sup.3, the total volume of the plasma or serum to be separated being at most 50% of the absorption volume of the glass fiber layer;
- and collecting the run-through from the glass fiber layer which is plasma or serum.
A process for separating plasma or serum from whole blood, comprising:
- providing a layer of glass fibers having an average diameter of from 0.2.mu. to 5.mu. and a density of from 0.1 g/cm.sup.2 to 0.5 g/cm.sup.2 ;
- slowly trickling whole blood onto one side of the layer of glass fibers, whereby plasma or serum separated from the blood becomes available at another side of the layer of glass fibers;
- and
- limiting the total volume of the plasma or serum separated from the blood to at most 50% of the absorption volume of the glass fiber layer.
Dependencies are inferred from the claim text.