Diagnostic system employing a unitary substrate to immobilize microspheres
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United States of America Patent
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Jul 11, 1995
Issued Date -
N/A
app pub date -
Dec 13, 1991
filing date -
Jul 17, 1987
priority date (Note) -
Expired
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Abstract
In a diagnostic apparatus system, a one piece porous substrate is provided in a container. The substrate serves both to extract an antigen in or on a top layer thereof with the remainder of the substrate serving as a reservoir. The pores in the top surface of the substrate are microscopic for entrapment of microspheres carrying antibodies. A target antigen in a test sample attaches to the antibodies when the test sample is poured through the top layer. The pores in all but the top layer of the substrate have a much greater pore size to comprise tile reservoir portion of the substrate.
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