System and method for plasma separation and measurement
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United States of America Patent
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Dec 31, 1996
Grant Date -
N/A
app pub date -
Oct 21, 1994
filing date -
Oct 21, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The system for transferring plasma to a test substrate comprises an applicator and the test substrate. The applicator includes a blood reservoir and a filter element which separates cellular components from the blood as plasma is passed to the test substrate. The test substrate includes an absorptive element which receives the plasma from the applicator. In one embodiment, measured amounts of plasma are transferred when the absorptive element becomes saturated, thus stopping the flow of plasma. In another embodiment, excess blood and cellular components are removed from the measured plasma by disengaging the applicator from the test substrate. In another embodiment, plasma transferred to the absorptive element is eluted from the absorptive element by subsequent application of an elution medium.
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