Patent ID: 7449329
Filing Date: 2008-11-11
Classification: G01N,Y10S

Abstract:
1. A blood crossmatching apparatus for testing compatibility of mammals for blood transfusion using whole blood comprising: (a) a centrifugeable tube having an open top end and an opposed closed bottom end; (b) a first layer of particulates at the bottom end in the centrifugeable tube having a permeability enabling nonagglutinated red blood cells of compatible mammals to pass through the layer; (c) a second layer of particulates layered upon the first layer in the centrifugeable tube, wherein particulates of the second layer comprise an immunoglobulin ligand bound to the particulates for bridging weakly agglutinating red blood cells; and (d) a density solution layered into the centrifugeable tube over the second layer, wherein the density solution separates white blood cells from red blood cells in the whole blood when centrifuged, such that the apparatus can show an incompatibility of the mammals for blood transfusion as a red blood cell band on or in an upper portion of the first layer.