Device for reference measurement and photometric correction in non-invasive glucose measurement using near infrared spectroscopy
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United States of America Patent
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Jul 12, 2005
Grant Date -
Sep 18, 2003
app pub date -
Jan 22, 2003
filing date -
Jan 22, 2002
priority date (Note) -
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Abstract
The present invention provides a photometric reference member comprising PTFE and glass. The member exhibits an absorbance change of less than 0.0001 absorbance units per degree C. over a range of temperatures, preferably from about 20° C. to about 40° C., and over wavelengths from about 600 nm to about 1650 nm, preferably about 600 nm to about 1050 nm. The invention also pertains to methods of using the photometric reference member to correct for temperature variations or drift in absorbance measurements.
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