Membranes, membrane overlays for exclusion of erythrocytes, and method for immunoassay of whole blood analytes
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United States of America Patent
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Nov 24, 1992
Grant Date -
N/A
app pub date -
Aug 8, 1990
filing date -
Aug 8, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A diagnostic test strip for chemically determining whole blood analytes comprises a support, a porous detection zone membrane affixed to the support, and an overlay membrane affixed to the support and in overlying and continuous contact with the detection zone membrane. The overlay membrane has a crenating agent for the exclusion of whole red blood cells from the pores of the detection zone membrane.
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