Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Salman Ali0
Frank C. Grenier0
Hina Syed0
Ryan F. Workman0
Date of Patent
February 8, 2011
Patent Application Number
11490624
Date Filed
July 21, 2006
Patent Primary Examiner
Patent abstract
An improved extractive reagent composition and method for extracting an immunosuppressant drug, such as sirolimus, tacrolimus or cyclosporine, from blood samples while yielding a test sample extract that has low vapor pressure and is compatible with immunoassay components. The inventive reagent composition comprises dimethyl sulfoxide (DMSO), at least one divalent metal salt and water. The sample extracts resulting from use of each of these combinations have low vapor pressure and are compatible with immunochemistry assays.
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