Chemistry: analytical and immunological testing – Composition for standardization – calibration – simulation,... – Particle count or volume standard or control
Reexamination Certificate
2007-10-23
2007-10-23
Wallenhorst, Maureen M. (Department: 1743)
Chemistry: analytical and immunological testing
Composition for standardization, calibration, simulation,...
Particle count or volume standard or control
C436S008000, C436S017000, C436S063000, C436S164000, C436S172000, C436S174000, C435S002000
Reexamination Certificate
active
11554098
ABSTRACT:
A method of making a reference control containing a nucleated red blood cell component includes providing a blood cell containing a nucleus; treating the blood cell with a treatment solution to alter a nucleus property from a natural value to a target value suitable for simulating nucleated red blood cells on a blood analyzer; and suspending treated blood cell in a suspension medium to form a reference control. The method also includes integrating the nucleated red blood cell component with white blood cell, red blood cell, platelet and reticulocyte components. Further disclosed is a cell treatment composition for altering a nucleus property, which includes a conditioning component, a lytic component for permeating cell membrane, and a fixing component for preserving the cell nucleus. Also disclosed is a method of using the reference control for measurement of nucleated red blood cells on a blood analyzer.
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Tsuji, T., et al, “New Rapid Flow Cytometric Method for the Enumeration of Nucleated Red Blood Cells”, Cytometry 37: 291-301 (1999).
Ortiz Nery
Socarras Sandra
Alter Mitchell E.
Beckman Coulter Inc.
Cuspa Technology Law Associates
Wallenhorst Maureen M.
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