Abbott Laboratories Corporation

Chung-Mei Ling

Richard H Decker

Alan S Armstrong

John E Herrmann

Lacy R Overby

Ruben Chairez

Dinah Abram

The present disclosure relates to a solid phase immunoassay for the detection of Neisseria gonorrhoeae antigens in a clinical specimen, wherein the Neisseria gonorrhoeae antigens to be determined are coated or adsorbed on the solid phase.

Immunoassay for Neisseria gonorrhoeae antigens

This invention involves an improvement in a method for immunochemically assaying a member of an antigen-antibody binding pair in serum or plasma which utilizes labeled antigen having a plurality of antigenic binding sites as the indicating reagent, the improvement comprising employing the antigen immunochemically bound to labeled Fab as the indicating reagent. This invention also encompasses reagents useful in practicing the above method. These methods and reagents are particularly useful in hepatitis detection.

Reagents and methods utilizing labeled Fab bound to antigens

The present invention encompasses a method for determining a class specific antibody to an antigen comprising:

Immunoassay for class specific antibodies

The present invention encompasses an improved method for detecting antigen or antibody bound to a solid support which involves the reaction of hapten-labeled antibody to the antigen or antibody to be detected followed by reaction of the hapten moiety with labeled antibody to the hapten and the determination of the amount of label bound to the solid support.

Hapten conjugated antibody for antibody or antigen detection

A method for direct radioimmunoassay of antigens or their associated antibodies utilizing a coated test apparatus comprising adding a serum to be tested for an antigen to test apparatus coated with its antibody; incubating the tubes for from 0.5 to 42 hours; aspirating the contents and washing the same with a Tris-HCl and sodium azide mixture; adding purified I.sup.125 labeled antibody into the tube and incubating for from 1 to 24 hours; aspirating and washing the contents; and counting the tube for I.sup.125 radiation. A similar assay for the antibody may be conducted utilizing an antigen coated apparatus and I.sup.125 labeled antigen. The method for coating these apparatus such as tubes comprises adding the antigen or antibody solution in a Tris-HCl, sodium azide solution into a suitable test tube or well, incubating the tubes at room temperature, aspirating and washing the contents and storing at from between 2.degree. and 25.degree. C. until use.

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Antioch, IL, United States of America

Chung-Mei Ling