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US 12,345,704 B2Granted
Systems for improving the dynamic range of biological assays
AssigneeAimplex Biosciences, Inc.
InventorYong Song
Life of this patent
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Abstract
Systems are provided that provide an extended measuring range for biological assays, such as immunoassays. In one embodiment a plurality of discrete test sites is used. Data for the proportion of test sites that indicate the presence of the analyte of interest and data that provides a statistical value for a signal generated by the population of discrete test sites is gathered. The results of these digital and statistical approaches are aggregated to provide an extended dynamic range.
Claims11
A system for performing a biological assay comprising:
- a plurality of first discrete test sites;
- a sensor for obtaining at least a first signal from each of the plurality of discrete test sites;
- and
- encoded instructions for performing a first biological assay directed to a first analyte on a sample using the plurality of first discrete test sites, wherein the first biological assay provides a change in the first signal indicative of the presence of the first analyte, comprising:
- deriving a plurality of quantities for the first signal, wherein each of the plurality of quantities is associated with the first signal observed from an individual first discrete test sites of a first population of the first discrete test sites;
- determining, using at least a portion of the plurality of quantities, a first proportion, wherein the first proportion comprises an enumeration of the first discrete test sites indicating the presence of the analyte;
- calculating a statistical distribution of the plurality of quantities derived from the first discrete test sites to derive a statistical value for the first signal;
- and
- quantifying the mass of the first analyte in the sample using the first proportion when the first proportion falls within a first cutoff range of values for the first proportion, and using the statistical value of the first signal when the first proportion falls outside of the first cutoff range of values for the first proportion.
6 more elements
Dependencies are inferred from the claim text.