Differential erythrocyte counts

Details Differential erythrocyte counts Differential erythrocyte counts

1991-10-04

1994-06-21

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

356 39, 436 70, G01N 3348, A61B 514

Patent

active

053219759

ABSTRACT:
Erythrocytes exist in vivo in a continuous cell subset gradient of density, with the youngest cells being the lightest. A blood sample is centrifuged in a transparent tube containing plastic beads which are selected to include groups of beads wherein each group has a different sharply defined specific gravity, and which are distributed within the range of red cell densities. The beads form spaced well-defined bands in the erythrocyte layer, which bands form boundaries between the different cell subset layers. Measurements of the lengths of the different cell subset layers are then made to quantify the red cell subsets in the patient's blood.

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Separation of Erythrocytes According to age on a simplified density gradient, 147-151, L. M. Corash, Jul. 1974.

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