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.

Date of Patent:
Jul. 10, 1990

Filed:

Feb. 20, 1987
Applicant:
Inventors:

Richard E Warrington, Houston, TX (US);

Abbas A Khan, Houston, TX (US);

Carl R Merril, Rockville, MD (US);

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; C12Q / ; C12Q / ;
U.S. Cl.
CPC ...
435-7 ; 435 19 ; 435 25 ; 436548 ; 436811 ;
Abstract

Disclosed is a screening assay for determining the amount of Superoxide Dismutase (SOD-1) in extra-cellular body fluids, for use in determining Trisomy 21 Down syndrome in a fetus. The assay can be done by any of a number of well known techniques including Radioimmunoassay, an Enzyme Linked Immunoassay, or a luminescence assay, single or tandem antibody type, carried out in solid or liquid phase. Polyclonal or monoclonal antibodies can be used. In the preferred embodiment, the assay is used to determine SOD-1 levels in amniotic fluid. A level above a threshold indicates a high probability of Trisomy 21 Down Syndrome for the fetus.


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