Method and apparatus for performing a lateral flow assay
First Claim
1. A method for performing a lateral flow assay comprising:
- a. depositing a sample on a test strip at an application region, the test strip including a first detection zone with a first measurement zone;
b. detecting a first detection signal arising from the first detection zone; and
c. generating a baseline for the first detection zone by interpolating between values of the first detection signal outside of the first measurement zone and inside of the first detection zone.
6 Assignments
0 Petitions
Accused Products
Abstract
An embodiment of the present invention provides a method for performing a lateral flow assay. The method includes depositing a sample on a test strip at an application region, detecting a first detection signal arising from the test strip in the first detection zone, and generating a baseline for the first measurement zone by interpolating between values of the detection signal outside of the first measurement zone and inside of the first detection zone. The method may include locating a beginning boundary and an ending boundary for the first measurement zone on the test strip. Additional detection zones having measurement zones may also be incorporated with the embodiment.
-
Citations
97 Claims
-
1. A method for performing a lateral flow assay comprising:
-
a. depositing a sample on a test strip at an application region, the test strip including a first detection zone with a first measurement zone;
b. detecting a first detection signal arising from the first detection zone; and
c. generating a baseline for the first detection zone by interpolating between values of the first detection signal outside of the first measurement zone and inside of the first detection zone. - View Dependent Claims (2, 3)
-
-
4. A method for performing a lateral flow assay comprising:
-
a. depositing a sample on a test strip at an application region, the test strip including a second detection zone within a second measurement zone;
b. detecting a second detection signal arising from the second detection zone; and
c. generating the baseline for the second detection zone by interpolating between values of the second detection signal outside of the second measurement zone and inside of the second detection zone. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
-
39. A method for performing a lateral flow assay, comprising the steps of:
-
a. providing a test strip on a cartridge, the test strip including a first analyte binding agent coupled to a detection agent and a second analyte binding agent;
b. depositing a sample on an application region of the test strip wherein at least a portion of the sample binds to the first analyte binding agent coupled to the detection agent to form a first analyte binding agent complex, the first analyte binding agent complex moving by lateral flow to a first detection zone that includes a first measurement zone, at least a portion of the first analyte binding agent complex binding to the second analyte binding agent in the first measurement zone to form a second complex;
c. detecting a first signal intensity in the first detection zone;
d. generating a baseline of a signal intensity from the first detection zone; and
e. quantifying a value of the first signal intensity representative of the second complex with respect to the baseline. - View Dependent Claims (40, 41, 42)
-
-
43. A method for performing a lateral flow assay, comprising:
-
a. providing a test strip on a cartridge, the test strip including a first analyte binding agent coupled to a detection agent and a second analyte binding agent;
b. depositing a sample on an application region of the test strip wherein at least a portion of the sample binds to the first analyte binding agent coupled to the detection agent to form a first analyte binding agent complex, the first analyte binding agent complex moving by lateral flow past a first detection zone having a first measurement zone and to a second detection zone that includes a second measurement zone at least a portion of the first analyte binding agent complex binding to the second analyte binding agent in the second measurement zone to form a second complex;
c. detecting a second signal intensity in the second detection zone;
d. generating a baseline of a signal intensity from the second detection zone; and
e. quantifying a value of the second signal intensity representative of the second complex with respect to the baseline. - View Dependent Claims (44, 45, 46)
-
-
47. A method for performing a lateral flow assay, comprising:
-
a. providing a test strip on a cartridge, the test strip including a first analyte binding agent coupled to a detection agent and a second analyte binding agent;
b. depositing a sample on an application region of the test strip wherein at least a portion of the sample binds to the first analyte binding agent coupled to a detection agent to form a first analyte binding agent complex, the first analyte binding agent complex moving by lateral flow past a first and second detection zone having a first and second measurement zone respectively, and to a third detection zone that includes a third measurement zone, at least a portion of the first analyte binding agent complex binding to the second analyte binding agent in the third measurement zone to form a second complex;
c. detecting a third signal intensity in the third detection zone;
d. generating a baseline of a signal intensity from the third detection zone; and
e. quantifying a value of the third signal intensity representative of the second complex with respect to the baseline. - View Dependent Claims (48, 49, 50, 51, 52)
-
-
53. A method for performing a lateral flow assay, comprising the steps of:
-
a. applying an electrical potential across a pair of spaced apart electrical leads to create an electrical field;
b. introducing a sample into the electrical field to induce a change in the electrical field, the sample being spaced from the spaced apart electrical leads; and
c. initiating timing of the lateral flow assay upon detecting the change in the electrical field. - View Dependent Claims (54, 55, 56, 57, 58, 59, 60, 61, 62)
-
-
63. A method for performing a lateral flow assay, comprising:
-
a. depositing a sample on a test strip of a cartridge at an application region of the test strip, the test strip including a first detection zone with a first measurement zone;
b. inserting the cartridge in a housing having a processor and memory resources for storing a plurality of assay tables;
c. selecting a first assay table from a plurality of assay tables to perform the lateral flow assay on the test strip;
d. detecting an intensity of a first detection signal arising from the first detection zone of the test strip that includes the first measurement zone; and
e. quantifying a value of signal intensity for the first detection signal using a parameter from the assay table selected from the plurality of assay tables. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
-
-
78. An apparatus for performing a lateral flow assay, comprising:
-
a housing having a receptacle for retaining a test strip that receives a sample, said test strip including a first detection zone with a first measurement zone comprising a concentration of compounds that affect an intensity of a signal arising from the test strip, the compounds being formed after the sample is deposited on the test strip;
a sensor for detecting a first detection signal arising from the test strip; and
a processor and memory resources that generates a baseline for the first measurement zone by interpolating between values of the first detection signal outside of the first measurement zone and inside of the first detection zone. - View Dependent Claims (79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90)
-
-
91. An apparatus for performing a lateral flow assay, comprising:
-
a pair of spaced apart electrical leads contained within a receptacle of a housing, the electrical leads receiving an electrical potential to create an electrical field; and
a test strip contained within the receptacle, the test strip being in sufficient proximity to the electrical leads to induce a change in the electrical field upon receiving a sample. - View Dependent Claims (92, 93, 94, 95, 96, 97)
-
Specification