Chemistry: analytical and immunological testing – Hemoglobin – myoglobin – or occult blood
Patent
1996-01-19
1997-11-11
Wallenhorst, Maureen M.
Chemistry: analytical and immunological testing
Hemoglobin, myoglobin, or occult blood
436 63, 436149, 436150, 422 73, 422 8201, 422 8202, 435 2, 324 711, G01N 3372
Patent
active
056863098
ABSTRACT:
This invention is related to an apparatus and method to determine the hemoglobin concentration of individual red blood cells by measuring the radio frequency resistance (RF) and direct current (DC) resistance resulting during the flow of the cells through a measurement aperture. The hemoglobin concentration of the cell is determined using the ratio of these two resistances. This determination can be made using a focused flow cell and a non-focused flow cell. In addition, the determination can be made with red blood cells which are either in their native, deformable state or with red blood cells that have been isovolumetrically sphered.
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Frank Robert Stewart
Wyatt James Lynn
Alter Mitchell E.
Coulter International Corp.
Wallenhorst Maureen M.
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