Calibration system for use with lateral flow assay test strips
First Claim
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1. A method of adjusting a final reflectance signal value measured on a lateral flow assay test strip, comprising:
- measuring a series of reflectance signal values at a test site while performing a lateral flow assay reaction on a test strip;
determining an extreme reflectance signal value representing the minimum reflectance signal value at the test site;
determining an interim reflectance signal value, wherein the interim reflectance signal value is measured at the test site a pre-determined time period after the extreme reflectance signal value is measured;
determining a final reflectance signal value at the test site after the interim reflectance signal value is determined;
pre-determining a relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the test strip has been made;
adjusting the final reflectance signal value based upon the interim reflectance signal value and the pre-determined relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the test strip has been made;
wherein the step of adjusting the final reflectance signal value is conducted after the step of determining a final reflectance signal value.
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Abstract
A method of adjusting a final signal value measured on a lateral flow assay test strip, by: identifying a pre-determined calibration method for the test strip, wherein the pre-determined calibration method corresponds to the manufacturing lot from which the test strip has been made; measuring signal values while performing a lateral flow assay reaction on a test strip; determining a final signal value; and adjusting the final signal value based upon the identified pre-selected calibration method for the test strip.
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Citations
24 Claims
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1. A method of adjusting a final reflectance signal value measured on a lateral flow assay test strip, comprising:
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measuring a series of reflectance signal values at a test site while performing a lateral flow assay reaction on a test strip; determining an extreme reflectance signal value representing the minimum reflectance signal value at the test site; determining an interim reflectance signal value, wherein the interim reflectance signal value is measured at the test site a pre-determined time period after the extreme reflectance signal value is measured; determining a final reflectance signal value at the test site after the interim reflectance signal value is determined; pre-determining a relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the test strip has been made; adjusting the final reflectance signal value based upon the interim reflectance signal value and the pre-determined relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the test strip has been made; wherein the step of adjusting the final reflectance signal value is conducted after the step of determining a final reflectance signal value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of adjusting a final reflectance signal value measured on a lateral flow assay test strip, comprising:
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measuring a series of reflectance signal values at a test site while performing a lateral flow assay reaction on a first test strip; determining an extreme reflectance signal value representing the minimum reflectance signal value at the test site; determining an interim reflectance signal value, wherein the interim reflectance signal value is measured at the test site a pre-determined time period after the extreme reflectance signal value is measured; determining a final reflectance signal value at the test site after the interim reflectance signal value is determined; utilizing a known relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the first test strip has been made, exclusive of the first test strip; adjusting the final reflectance signal value based upon the interim reflectance signal value and the pre-determined relationship between the interim reflectance signal value and the final reflectance signal value for the manufacturing lot from which the first test strip has been made. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification