Methods of determining the concentration of an analyte in a fluid test sample
US7132041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2004 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Oct 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/3274
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of determining the concentration of an analyte in a fluid test sample that includes providing an electrochemical sensor adapted to measure the analyte in the test sample. The test sample sufficiently covers a counter and working electrode of the electrochemical sensor. A first potential is applied between the counter and working electrodes for a first predetermined time period and the current is measured and the time is recorded. After the first potential is removed or substantially reduced, a second potential is applied between the counter and working electrodes and the current is measured. The concentration of the analyte is determined in the test sample as a function of the current measured. An index is calculated and compared to at least one predetermined parameter to identify when a bias, if any, exceeds a threshold. An error signal or analyte concentration is displayed depending on the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.