Method for detecting low levels of microorganisms

Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...

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435 72, 435 732, 435 735, 435 73, 435 79, 435 29, 435261, 435 34, 435174, 436518, 436524, G01N 3353, G01N 33543, G01N 33537, G01N 33569

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060047666

ABSTRACT:
A method is provided for the detection of low levels of a microorganism in a sample in the presence of competing microflora, comprising the steps of: (a) exposing the sample to a solid support to which are adsorbed antibodies specific for said microorganism; (b) washing the solid support to remove unbound material; (c) combining the solid support with sterile nutrient broth which permits replication of said microorganism; (d) incubating the solid support with said nutrient broth at a temperature and for a time sufficient to allow said microorganism to replicate and be recaptured by said antibodies on said solid support; (e) releasing the bound microorganism from the solid support into a solution; and (f)assaying the solution for the microorganism. A kit for performing the assay also is provided. This kit comprises a solid support to which are adsorbed antibodies specific for the microorganism, a first container comprising a washing solution, a second container comprising a sterile nutrient broth, and, optionally, a third container comprising a solution comprising a releasing agent.

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