Test strip for measuring analyte concentration over a broad range of sample volume
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United States of America Patent
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Jan 17, 2006
Grant Date -
Aug 8, 2002
app pub date -
Mar 28, 2002
filing date -
Aug 28, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
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