Chemistry: analytical and immunological testing – Optical result
Reexamination Certificate
2007-12-04
2007-12-04
Gakh, Yelena G. (Department: 1743)
Chemistry: analytical and immunological testing
Optical result
C436S086000, C436S095000
Reexamination Certificate
active
10829777
ABSTRACT:
Apparatus and method for determining at least one parameter, e. g., concentration, of at least one analyte, e. g., urea, of a biological sample, e. g., urine. A biological sample particularly suitable for the apparatus and method of this invention is urine. In general, spectroscopic measurements can be used to quantify the concentrations of one or more analytes in a biological sample. In order to obtain concentration values of certain analytes, such as hemoglobin and bilirubin, visible light absorption spectroscopy can be used. In order to obtain concentration values of other analytes, such as urea, creatinine, glucose, ketones, and protein, infrared light absorption spectroscopy can be used. The apparatus and method of this invention utilize one or more mathematical techniques to improve the accuracy of measurement of parameters of analytes in a biological sample. The invention also provides an apparatus and method for measuring the refractive index of a sample of biological fluid while making spectroscopic measurements substantially simultaneously.
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Jeng Tzyy-Wen
McDowell Larry L.
Oosta Gary M.
Pezzaniti Joseph Larry
Shain Eric B.
Abbott Laboratories
Gakh Yelena G.
Mercahnt & Gould P.C.
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