Method of determining an analyte concentration in a sample from an absorption spectrum
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United States of America Patent
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Mar 1, 2005
Grant Date -
Jan 29, 2004
app pub date -
Feb 12, 2003
filing date -
Dec 14, 2001
priority date (Note) -
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Abstract
A method determines an analyte concentration in a sample including the analyte and a substance. The method includes providing an absorption spectrum of the sample. The absorption spectrum has an absorption baseline. The method further includes shifting the absorption spectrum so that the absorption baseline approximately equals a selected absorption value in a selected absorption wavelength range. The method further includes subtracting a substance contribution from the absorption spectrum. Thus, the method provides a corrected absorption spectrum substantially free of a contribution from the substance.
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