Device for carrying out lateral-flow assays involving more than one analyte
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United States of America Patent
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Jan 18, 2005
Issued Date -
N/A
app pub date -
Aug 6, 2001
filing date -
Mar 1, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is an improvement to a dry assay device for determining the concentration of a first analyte in a sample of body fluid and a second analyte in the same sample of body fluid. The device involves the use of a strip of an absorbent material through which the sample of body fluid flows and wherein the first analyte is determined colorimetrically in a first region of the strip and the second analyte is determined by an immunoassay which takes place in a second region of the strip located downstream from the first region. The improvement involves placing the strip in a hollow casing having a top and a bottom and which is so constructed that when the top and bottom of the casing are mated there is formed a U shaped, body fluid impervious barrier around the first region of the strip to prevent the sample of body fluid from flowing in any direction other than in the direction of the second region of the strip.
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