Lateral flow assay systems and methods
First Claim
1. A diagnostic test system, comprising:
- a test strip comprising one or more test regions and one or more control regions, the one or more test regions comprising multiple localized regions containing an immobilized substance configured to bind a target analyte;
a reader programed to obtain light intensity measurements from the multiple localized regions of the one or more test regions, the reader comprisingone or more light sources configured to illuminate the multiple localized regions of the one or more test regions, anda light detector array that comprises individual light detectors, each individual light detector configured to obtain a separable light intensity measurement from one of the multiple localized regions of the one or more test regions; and
a data analyzer comprising software that identifies the separable light intensity measurements obtained from the one or more test regions and computes at least one parameter from the identified separable light intensity measurements.
3 Assignments
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Accused Products
Abstract
In one aspect, a diagnostic test system includes a housing, a reader, and a data analyzer. The housing includes a port for receiving a test strip. The reader obtains separable light intensity measurements from localized regions of an area of the detection zone exposed for optical inspection, wherein each of the localized regions is characterized by at least one surface dimension smaller than the first dimension. The data analyzer identifies ones of the light intensity measurements obtained from the at least one test region and computes at least one parameter from the identified ones of the light intensity measurements. In another aspect, the reader obtains a respective set of light intensity measurements from each of multiple corresponding regions of the exposed surface area of the detection zone, and the data analyzer computes at least one parameter from at least one of the sets of light intensity measurements.
118 Citations
18 Claims
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1. A diagnostic test system, comprising:
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a test strip comprising one or more test regions and one or more control regions, the one or more test regions comprising multiple localized regions containing an immobilized substance configured to bind a target analyte; a reader programed to obtain light intensity measurements from the multiple localized regions of the one or more test regions, the reader comprising one or more light sources configured to illuminate the multiple localized regions of the one or more test regions, and a light detector array that comprises individual light detectors, each individual light detector configured to obtain a separable light intensity measurement from one of the multiple localized regions of the one or more test regions; and a data analyzer comprising software that identifies the separable light intensity measurements obtained from the one or more test regions and computes at least one parameter from the identified separable light intensity measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A diagnostic test system, comprising:
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a reader programed to measure an intensity of a light signal arising from a measurement zone of a lateral flow assay test strip as a result of the presence of a labeled target analyte complex immobilized in the measurement zone, the reader further configured to measure an intensity of a light signal arising from a control zone of the lateral flow assay test strip as a result of the presence of a labeling substance immobilized in the control zone, the lateral flow assay test strip comprising multiple localized regions, the reader comprising a light source configured to illuminate the lateral flow assay test strip, and a plurality of light detectors, each light detector configured to detect intensity of light signals arising from one of the multiple localized regions and generate a light intensity measurement; and a data analyzer programed to individually analyze each light intensity measurement and isolate light intensity measurements arising from the measurement zone and the control zone from light intensity measurements that do not arise from the measurement zone or the control zone, the data analyzer further configured to compute at least one parameter from the isolated light intensity measurements arising from the measurement zone and the control zone. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification