Blood collection method

Details Blood collection method Blood collection method

1990-05-16

1991-07-16

Jones, W. Gary

Liquid purification or separation

Processes

Including controlling process in response to a sensed condition

210781, 210782, 210514, 436177, 494 37, 422101, B01D 2126

Patent

active

050322885

ABSTRACT:
A method of use is disclosed of a device that causes phase separation of whole blood, using much lower centrifugal forces. As a result, leukocytes are separated from blood cells having specific gravities of 1.09 g/ml or higher. The method preferably uses a separation chamber arranged so that its long dimension or axis is parallel, not perpendicular, to the spin axis, and a valve that allows automatic removal of the ligher phase(s).
In one aspect, the method separates a lighter phase from a heavier phase, for example, lymphocytes from whole blood, using a centrifugal force of reduced amount. In another aspect, DNA is extracted readily from the separated lighter phase since it is less likely that the lighter phase will be contaminated by erythrocytes as occurs in conventional separation techniques.

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