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:
Sep. 28, 1982
Filed:
Aug. 24, 1979
Robert H Allen, Englewood, CO (US);
University Patents, Inc., Norwalk, CT (US);
Abstract
The vitamin B.sub.12 (cobalamin) level of human blood and mammalian tissue is routinely assayed utilizing radioisotope dilution assay (RIDA) techniques. The presence of vitamin 'B.sub.12 analogues' in most such samples, which analogues are erroneously assayed as true vitamin B.sub.12 utilizing prior art RIDA techniques, has been determined. Such errors are due to the fact that binding proteins commonly used in prior art RIDA techniques usually include proteins which bind both true vitamin B.sub.12 and the previously unrecognized vitamin B.sub.12 analogues which are present in such samples. The errors previously caused by the measurement of vitamin B.sub.12 analogues are avoided by using an assay composition for binding vitamin B.sub.12 which is substantially free of substances which bind vitamin B.sub.12 analogues in said samples. Methods of making and using such assay compositions are taught.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile