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Last Updated: October 6, 2022

Patent: 4,341,755


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Summary for Patent: 4,341,755
Title: Parathyroid radioimmunoassay
Abstract:A method for the radioimmunoassay of parathyroid hormone in mammalian serum. The method is an improvement on previous double antibody radioimmunoassays in that spurious assay results caused by the nonspecific interaction of serum proteins with the labeled peptide is eliminated by the labeling of a specific portion of either human or bovine parathyroid molecule. The 65-84 portion of human or bovine parathyroid hormone, as radioactively labeled, is incorporated in the assay as the labeled peptide. A chicken antibody with a high affinity for the 65-84 portion of human parathyroid hormone is incorporated in the assay as the first antibody. The invention further pertains to compounds useful in practicing the method, namely X.sup.64 -hPTH.sup.65-84 and Y-X.sup.64 -hPTH.sup.65-84 wherein X is either histidyl, tyramyl, histamyl, or tyrosyl, and wherein Y is either .sup.125 I or .sup.131 I.
Inventor(s): Lindall; Arnold W. (Marine on St. Croix, MN)
Assignee: Immuno Nuclear Corporation (Stillwater, MN)
Application Number:06/169,492
Patent Claims:see list of patent claims

Details for Patent 4,341,755

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Nps Pharmaceuticals, Inc. NATPARA parathyroid hormone For Injection 125511 01/23/2015 See Plans and Pricing 2039-03-29
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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