Analysis of Optical Data with the Aid of Histograms
First Claim
1. A system for determining the concentration of an analyte in a liquid sample comprising:
- a detection unit for detecting light intensities which are radiated from subareas of a detection area of a test element; and
an evaluation unit which determines a frequency distribution for the detected light intensities wherein the frequency distribution has at least one first maximum caused by one of at least one unwetted subarea and at least one reference area and a second maximum caused by subareas wetted by a sample and at least one light intensity is selected on the basis of the frequency distribution and the concentration of the analyte is determined from the at least one selected light intensity.
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Accused Products
Abstract
A system for determining the concentration of an analyte in a liquid sample comprising a detection unit for detecting light intensities which are radiated from subareas of a detection area of a test element as well as an evaluation unit which determines a frequency distribution for the detected light intensities wherein the frequency distribution has at least one first maximum caused by unwetted subareas or at least one reference area and a second maximum caused by wetted subareas and selects at least one light intensity on the basis of the frequency distribution and determines the concentration of the analyte from the at least one selected light intensity.
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Citations
22 Claims
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1. A system for determining the concentration of an analyte in a liquid sample comprising:
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a detection unit for detecting light intensities which are radiated from subareas of a detection area of a test element; and an evaluation unit which determines a frequency distribution for the detected light intensities wherein the frequency distribution has at least one first maximum caused by one of at least one unwetted subarea and at least one reference area and a second maximum caused by subareas wetted by a sample and at least one light intensity is selected on the basis of the frequency distribution and the concentration of the analyte is determined from the at least one selected light intensity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for determining the concentration of an analyte in a liquid comprising the steps of:
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applying a liquid to a detection area of a test element; detecting light intensities of the light radiated from subareas of the detection area; determining a frequency distribution of the detected light intensities, wherein the frequency distribution has at least one first maximum caused by one of at least one unwetted subarea and at least one reference area and a second maximum caused by wetted subareas; and calculating the concentration of the analyte on the basis of at least one light intensity which was selected on the basis of its frequency. - View Dependent Claims (15, 16)
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17. A method for the quality control of a detection area of a test element comprising the steps of:
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detecting light intensities of light radiated from unwetted subareas of a detection area; calculating a frequency distribution of the detected light intensities; and comparing the frequency distribution with quality criteria. - View Dependent Claims (18, 19)
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20. An instrument for determining the concentration of an analyte in a liquid sample comprising:
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a detection unit for detecting light intensities which are radiated from subareas of a detection area of a test element; and an evaluation unit which determines a frequency distribution for the detected light intensities wherein the frequency distribution has at least one first maximum caused by one of at least one unwetted subarea and at least one reference area and a second maximum caused by wetted subareas; wherein the evaluation unit is integrated into the detection unit. - View Dependent Claims (21, 22)
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Specification