The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 1988
Filed:
Feb. 17, 1984
Edward T Maggio, San Diego, CA (US);
Synbiotics Corporation, San Diego, CA (US);
Abstract
A serum antibody assay for assaying a serum sample is described which has diagnostic value for determining the presence of a specific serum antibody which may be indicative of an infection by a specific microorganism. The serum antibody assay has an enhanced diagnostic value because it can eliminate interference by selected cross-reactive antibodies which are directed against one or more other microorganisms to which the assay is not directed and which may be present in the serum sample with a clinically significant frequency. The serum antibody assay uses an immunologically purified fraction of antigenic material derived from the specific microorganism to which assay is directed. The immunologically purified fraction of antigenic material includes immunologically distinguishable components of the antigenic material. These immunologically distinguishable components are reactive with the antibodies to be assayed and are nonreactive with certain antibodies not to be assayed, even where these certain antibodies not to be assayed are cross-reactive with antigen from the microorganism to be diagnosed. The immunologically distinguishable components are made using an immunoadsorption method. The immunoadsorption method may be specially screened monoclonal antibodies which bind only the immunologically distinguishable components. Alternatively, the immunoadsorption method may use polyclonal antibodies which bind immunologically cross-reactive components and leave the immunologically distinguishable components unbound.