Measuring Range Extension of Chromatographic Rapid Tests

摘要

A method for the quantitative determination of an analyte in a sample is provided comprising: (a) providing an analyte-specific substance which is able to undergo a reaction which generates a detectable signal when it is contacted with an analyte; (b) providing at least two calibration graphs which have been generated by reacting in each case the same analyte-specific substance with different amounts of in each case the same test analyte for in each case a predetermined reaction time; (c) contacting the analyte-specific substance with a sample which contains the analyte to be detected; (d) measuring the signal at a first predetermined reaction time for which a first calibration graph according to (b) is provided; (c) checking whether the signal measured according to (d) enables a quantitative determination of the analyte with a desired accuracy; (f) (i) quantitatively determining the analyte on the basis of the signal measured according to (d) if the desired accuracy is reached, or (ii) measuring the signal at a second predetermined reaction time for which a second calibration graph according to (b) is provided; (g) checking whether the signal measured according to (f(ii)) enables a quantitative determination of the analyte with a desired accuracy; and (h) (i) quantitatively determining the analyte on the basis of the signal measured according to f(ii) if the desired accuracy is reached, or (ii) continuing the determination at at least one further predetermined reaction time (corresponding to (f)(ii), (g), (h)(i)).

主权项

1. A method for the quantitative determination of an analyte in a sample comprising:
(a) providing test strip comprising an analyte-specific substance which is able to undergo a reaction which generates a detectable signal when it is contacted with an analyte, (b) providing at least two calibration graphs which have been generated by reacting in each case the same analyte-specific substance with different amounts of in each case the same test analyte for in each case a predetermined reaction time, (c) contacting the analyte-specific substance with a sample which contains the analyte to be detected, (d) measuring a first signal at a first predetermined reaction time for which a first calibration graph according to (b) is provided, (e) measuring a second signal at a second predetermined reaction time for which a second calibration graph according to (b) is provided, (f) optionally measuring a further signal, (g) checking which of the signals measured according to (d), (e) or (f) enables a sufficient accuracy for the quantitative determination of the analyte, and (h) quantitatively determining the analyte on the basis of the signal which enables an adequate accuracy.