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:
Mar. 20, 1984
Filed:
Apr. 13, 1981
Applicant:
Inventors:
Kenneth E Fahrenholtz, Bloomfield, NJ (US);
John E Heveran, Fairfield, NJ (US);
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; C07G / ; C07D / ;
U.S. Cl.
CPC ...
436543 ; 436544 ; 436545 ; 436542 ; 436804 ; 436815 ; 436808 ; 436547 ; 422 61 ; 2601 / ; 549390 ;
Abstract
An improved immunoassay for detecting cannabinoids is described. This immunoassay is characterized by utilizing, as reagents, antibody, .sup.125 I-radiolabeled antigen, an unlabeled antigen and an anion exchange resin for separation of labeled and unlabeled antigen. The iodinated tetrahydrocannabinol moiety is stabilized by the addition of small quantities of antioxidants such as butylated hydroxy toluene.