Gated voltammetry

G - Physics – 01 – N

Patent

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Details

G01N 27/48 (2006.01) A61B 5/00 (2006.01) C12Q 1/00 (2006.01) G01N 33/487 (2006.01)

Patent

CA 2623480

A sensor system, device, and methods for determining the concentration of an analyte in a sample is described. Gated voltammetric pulse sequences including multiple duty cycles of sequential excitations and relaxations may provide a shorter analysis time and/or improve the accuracy and/or precision of the analysis. The disclosed pulse sequences may reduce analysis errors arising from the hematocrit effect, variance in cap-gap volumes, non-steady-state conditions, mediator background, a single set of calibration constants, under- fill, and changes in the active ionizing agent content of the sensor strip.

L'invention concerne un système, un dispositif et des procédés de détection destinés à déterminer la concentration d'un analyte dans un échantillon. Des séquences d'impulsions voltampérométriques commandées comprenant de multiples cycles de service d'excitations et de relâchements séquentiels peuvent permettre d'obtenir un temps d'analyse plus court et/ou d'améliorer l'exactitude et/ou la précision de l'analyse. Les séquences d'impulsions susmentionnées peuvent réduire les erreurs d'analyse résultant de l'effet d'hématocrite, de la variation des volumes d'espace-capsule, de l'instabilité des conditions, du biais introduit par les médiateurs, de l'unicité de l'ensemble de constantes d'étalonnage, du sous-remplissage et des changements de teneur en agents ionisants actifs de la bande de détection.

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