Chemistry: analytical and immunological testing – Optical result – With reagent in absorbent or bibulous substrate
Patent
1996-12-09
1998-08-25
Alexander, Lyle A.
Chemistry: analytical and immunological testing
Optical result
With reagent in absorbent or bibulous substrate
422 58, 422 61, G01N 3349
Patent
active
057982724
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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Allen Michael P.
Ensler Lawrence M.
Zuk Robert F.
Alexander Lyle A.
First Medical, Inc.
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