Disposable sensor for electrochemical detection of hemoglobin
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United States of America Patent
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Dec 10, 2013
Grant Date -
Mar 14, 2013
app pub date -
Sep 12, 2011
filing date -
Sep 12, 2011
priority date (Note) -
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Abstract
A disposable biosensor for determining the content of hemoglobin and hematocrit in a sample of whole blood that includes a laminated strip with a first and second end, at least a reference, a working electrode and a blank electrode embedded in the laminated strip. The working electrode contains a reagent sensitive to hemoglobin or hemotocrit. The blank electrode is used to measure oxidizable species in the fluid sample and to correct the current signal of the working electrode. The construction of the biosensor allows accurate measurement of the impedance of a small fluid sample, which is used to further correct the current signal of the working electrode.
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