Immunoassay process utilizing a cellulose organic ester fibret support element

Abstract From the Canadian patent

Immunoassay process for the detection of an antigen in a sample of blood, serum, urine and other liquids employing a test apparatus comprising a reaction chamber and a support element in the reaction chamber comprising a blend of from about 5 to 95 percent cellulose organic ester fibrets and from about 95 to 5 percent by weight of a dispersible cut fibers where a predetermined amount of an antibody capable of extracting an antigen from the sample is bound to the support element the, process comprising depositing the sample on the upper surface of the support element and detecting the amount of antigen in the sample .