Reagents for assays for ligands

G - Physics – 01 – N

Patent

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Details

G01N 33/53 (2006.01) G01N 33/543 (2006.01) G01N 33/94 (2006.01)

Patent

CA 2231775

One aspect of the present invention relates to a method for releasing a ligand from a complex thereof. The method comprises contacting a medium suspected of containing such complex with an effective amount of a compound effective in releasing the ligand. Another aspect of the present invention is an improvement in a method for the determination of an analyte that is a member of a specific binding pair in a sample suspected of containing such analyte. The method comprises the steps of (a) providing in an assay medium the sample and a binding partner for the analyte and (b) detecting the binding of the binding partner to the analyte. The improvement comprises including in the assay medium a compound of the invention in an amount sufficient to enhance the accuracy of the determination. The invention has particular application to a method for releasing mycophenolic acid from a complex thereof. The method provides an improvement in a method for the determination of mycophenolic acid in a sample suspected of containing mycophenolic acid. The present invention also provides assay reagents as well as packaged kits useful for performing the methods of the invention.

La présente invention concerne, sous l'un des aspects, un procédé permettant de libérer un ligand d'un complexe le contenant. Le procédé consiste à mettre en contact un milieu susceptible de contenir un tel complexe avec une quantité suffisante d'un composé capable de libérer le ligand. Un autre aspect de l'invention concerne un perfectionnement apporté à un procédé de détermination d'un analyte qui appartient à une paire de liaison spécifique dans un échantillon susceptible de contenir un tel analyte. Le procédé consiste (a) à mettre dans un milieu de dosage l'échantillon et le partenaire de liaison approprié à l'analyte, et (b) à détecter la liaison du partenaire de liaison avec l'analyte. Le perfectionnement consiste à inclure dans le milieu de dosage un composé de l'invention en quantité suffisante pour améliorer la précision de l'évaluation. L'invention convient particulièrement à un procédé de libération d'acide mycophénolique à partir d'un complexe le contenant. Le procédé constitue un perfectionnement d'un procédé d'évaluation de l'acide mycophénolique dans un échantillon susceptible de contenir de l'acide mycophénolique. La présente invention concerne enfin des réactifs de dosage ainsi que des trousses permettant la mise en oeuvre du procédé de l'invention.

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