DETERMINING USABILITY OF ANALYTICAL TEST STRIP

A system for determining usability of an analytical test strip includes a sample chamber to receive a fluid sample, a reagent in the sample chamber having a moisture-varying impedance, and two detection electrodes contacting the reagent. A test meter applies an AC waveform across the reagent via the...

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Bibliographic Details
Main Authors WELSH, RAYMOND, ELDER, DAVID, MCCOLL, DAVID, PATI, PRASANTA, MAGENNIS, RYAN
Format Patent
LanguageEnglish
French
German
Published 02.11.2016
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A system for determining usability of an analytical test strip includes a sample chamber to receive a fluid sample, a reagent in the sample chamber having a moisture-varying impedance, and two detection electrodes contacting the reagent. A test meter applies an AC waveform across the reagent via the detection electrodes while measuring an impedance of the reagent. A processor automatically determines whether the measured impedance of the reagent meets a dryness criterion. The meter includes a housing, a strip port connector, an impedance measurement circuit and the processor. A method for determining usability of a strip inserted in a hand held meter includes applying an AC waveform across a reagent of the strip and measuring a first electrical signal, and determining whether the strip meets the dryness criterion based on the first electrical signal. The test strip and ways of determining an analyte are also described.
Bibliography:Application Number: EP20140820871