Zero volume electrochemical cell
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United States of America Patent
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Mar 7, 1995
Issued Date -
N/A
app pub date -
Sep 29, 1993
filing date -
Jun 20, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatuses are described for determining the presence of an analyte in a sample suspected of containing the analyte. The method comprises contacting a concentrate of a determinable element capable of being detected by means of a semiconductive electrode with the electrode in the presence of a relatively large volume of an assay medium. The determinable element is present in the concentrate in the amount related to the amount of analyte present in the sample. The volume of the medium in diffusive communication with the concentrate is then reduced and the determinable element is detected by means of the effect that the determinable element has on the semiconductive electrode.
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