Extension of the dynamic detection range of assay devices
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United States of America Patent
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May 17, 2011
Grant Date -
May 26, 2005
app pub date -
Nov 21, 2003
filing date -
Nov 21, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A flow-through assay device for detecting the presence or quantity of an analyte residing in a test sample is provided. The device utilizes multiple detection zones, one of which is premised on “competitive” binding of the analyte and the other is premised on “sandwich” binding of the analyte. The present inventors believe that the combination of these zones may enable the detection of an analyte over extended concentration ranges.
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