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Method of determining an analyte concentration in a sample from an absorption spectrum

  • US 20040019431A1
  • Filed: 02/12/2003
  • Published: 01/29/2004
  • Est. Priority Date: 12/14/2001
  • Status: Active Grant
First Claim
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1. A method of determining an analyte concentration in a sample, the sample comprising the analyte and a substance, the method comprising:

  • providing an absorption spectrum of the sample, the absorption spectrum having an absorption baseline;

    shifting the absorption spectrum so that the absorption baseline approximately equals a selected absorption value in a selected absorption wavelength range; and

    subtracting a substance contribution from the absorption spectrum, thereby providing a corrected absorption spectrum substantially free of a contribution from the substance.

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