Reflectance measurement of analyte concentration with automatic initiation of timing
US6268162A · kind A · utility
275Cited by
380References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | May 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/144444
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for measuring analyte concentration in a body fluid involves taking reflectance readings from a first surface of a porous reagent-containing matrix both before and after a sample of the fluid has been applied to a second surface of the matrix. A sequence of reflectance measurements is initiated upon a predetermined drop in reflectance, which indicates that sample has reached the first surface. The analyte concentration is calculated from the sequence of reflectance measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.