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:
Nov. 10, 1981
Filed:
Nov. 29, 1978
Applicant:
Inventor:
Robert F Coombes, Walnut, CA (US);
Assignee:
Diagnostic Products Corp., Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01T / ;
U.S. Cl.
CPC ...
424-1 ; 2323 / ; 424 12 ; 435-4 ; 435-7 ;
Abstract
In the immunoassay of thyroxine using dried blood samples spotted on filter paper, the assay in this invention is run at a pH of 9.2 to 10.0, preferably at about 9.5, rather than the pH range of about 8.4 to 8.7 generally used in the art. The advantage of this higher pH range is that more accurate results are obtained with neonatal specimens. An additional advantage is that the blank or nonspecific binding is lower for many immunoassay procedures.