Patent ID: 7824873
Filing Date: 2010-11-02
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 comprising 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 comprising a density solution layered into the centrifugeable tube over the first layer, wherein the density solution separates white blood cells from red blood cells in the whole blood when centrifuged; and (d) a third layer layered upon the second layer comprising an immunoglobulin ligand in aqueous solution for bridging weakly agglutinating red blood cells, 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.