Cleavable labels for use in binding assays
First Claim
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1. A method for determining the amount of an analyte in a sample suspected of containing the analyte, which method comprises:
- reacting said sample with a reagent containing at least one substance specifically reactive with said analyte, obtaining an insoluble complex incorporating a cleavable detectable label, separating the complex from the liquid phase, redissolving said complex to obtain a solubilized complex, cleaving the detectable label from the solubilized complex, and detecting the cleaved labelsaid label being conjugated to a component of said complex, through at least one bond cleavable under conditions compatible with said assay, wherein the cleavable bond permits the label to be released from the solubilized complex prior to measuring the amount of said label.
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Abstract
An improvement in an assay method which relies on the detection of a labeled, solubilized specific binding complex is achieved by linking the label to a component of the complex through a bond cleavable under conditions compatible with the assay and with the complex in solution.
131 Citations
14 Claims
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1. A method for determining the amount of an analyte in a sample suspected of containing the analyte, which method comprises:
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reacting said sample with a reagent containing at least one substance specifically reactive with said analyte, obtaining an insoluble complex incorporating a cleavable detectable label, separating the complex from the liquid phase, redissolving said complex to obtain a solubilized complex, cleaving the detectable label from the solubilized complex, and detecting the cleaved label said label being conjugated to a component of said complex, through at least one bond cleavable under conditions compatible with said assay, wherein the cleavable bond permits the label to be released from the solubilized complex prior to measuring the amount of said label. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification