Methods for monitoring the status of assays and immunoassays
First Claim
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1. A method for determining a rate of flow of a solution through an assay device, wherein said assay device during an assay for a predetermined analyte comprises a reaction chamber and at least one diagnostic lane, the method comprising:
- (a) providing a first member of a binding pair (MBP) in said reaction chamber and a second MBP bound to a solid phase on said diagnostic lane, wherein said first MBP comprises a label, wherein said first MBP and said second MBP do not bind to any analyte or to any reagents used for measuring the presence or amount of any analyte in said assay device during the assay for the predetermined analyte, and wherein said first MBP and said second MBP have specific binding affinity for one another;
(b) detecting a signal from said diagnostic lane, wherein said signal is generated from said label; and
(c) determining said rate of flow of liquid through said assay device during an assay for a predetermined analyte from said reaction chamber through said diagnostic lane from the amount of said signal in said diagnostic lane.
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Abstract
The invention relates in part to the use of independent assay controls (IACs) for the optical communication between an assay device and an instrument in monitoring and performing assays, preferably immunoassays.
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Citations
28 Claims
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1. A method for determining a rate of flow of a solution through an assay device, wherein said assay device during an assay for a predetermined analyte comprises a reaction chamber and at least one diagnostic lane, the method comprising:
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(a) providing a first member of a binding pair (MBP) in said reaction chamber and a second MBP bound to a solid phase on said diagnostic lane, wherein said first MBP comprises a label, wherein said first MBP and said second MBP do not bind to any analyte or to any reagents used for measuring the presence or amount of any analyte in said assay device during the assay for the predetermined analyte, and wherein said first MBP and said second MBP have specific binding affinity for one another;
(b) detecting a signal from said diagnostic lane, wherein said signal is generated from said label; and
(c) determining said rate of flow of liquid through said assay device during an assay for a predetermined analyte from said reaction chamber through said diagnostic lane from the amount of said signal in said diagnostic lane. - View Dependent Claims (2, 3, 4, 5)
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6. A method for determining the effect of a physical parameter in an assay device or of a fluid introduced into the assay device during an assay for a predetermined analyte, wherein said assay device comprises a reaction chamber and at least one diagnostic lane, the method comprising:
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(a) providing a first MBP comprising a label and a second MBP comprising an affinity tag in said reaction chamber, said first MBP and said second MBP arranged to form a solution with a test sample, and providing an affinity tag partner on said diagnostic lane, wherein said affinity tag partner has specific binding affinity for said affinity tag, wherein said first MBP, said second MBP, said affinity tag partner, and said affinity tag do not bind to any analyte, or to any reagents used for measuring, the presence or amount of any analyte in said assay device, during an assay for a predetermined analyte and wherein said first MBP and said second MBP have specific binding affinity for one another;
(b) detecting a signal from said diagnostic lane, wherein said signal is generated from said label, wherein said signal is detected at a location [in a position] wherein said affinity tag partner is located; and
(c) determining the effect of the physical parameter in the assay device or of the fluid introduced into the assay device during the assay for the predetermined analyte, wherein said physical parameters is related to the amount of said signal in said diagnostic lane. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for measuring progress and time of completion for an assay in an assay device during an assay for a predetermined analyte, wherein said assay device comprises a reaction chamber and at least one diagnostic lane:
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(a) providing a label in said reaction chamber, wherein said label does not bind to any reagents used for measuring the presence or amount of any analyte in said assay device during an assay for a predetermined analyte, (b) detecting a signal from at least one discrete zone of said diagnostic lane, wherein said signal is generated from said label, and wherein said zone does not bind any analyte, or any reagents used for measuring the presence or amount of any analyte in said assay device during an assay for a predetermined analyte, and (c) determining said progress and time of completion of said assay in said assay device from at least one of;
(i) a rate of change of the amount of said signal; and
(ii) an absolute amount of said signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for verifying a location of a detection zone in an assay device, wherein said assay device during an assay for a predetermined analyte, comprises a reaction chamber and at least one diagnostic lane, the method comprising:
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(a) providing a label in said reaction chamber, wherein said label does not bind to any analyte or to any reagents used for measuring the presence or amount of any analyte in said assay device during an assay for a predetermined analyte, (b) measuring a signal from at least one discrete zone of said diagnostic lane, wherein said signal is generated by said label; and
(c) verifying said location of said detection zone by a detection of said signal in said discrete zone of said diagnostic lane. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification