Methods for separation, characterization and/or...

G - Physics – 01 – N

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G01N 33/68 (2006.01) C12M 1/34 (2006.01) C12Q 1/04 (2006.01)

Patent

CA 2741019

The present invention is directed to a method for separating, characterizing and/or identifying microorganisms in a test sample. The method of the invention comprises an optional lysis step for lysing non-microorganism cells that may be present in a test sample, followed by a subsequent separation step. The method may be useful for the separation, characterization and/or identification of microorganisms from complex samples such as blood-containing culture media. The invention further provides for interrogation of the separated microorganism sample by mass spectrometry to produce a mass spectrum of the microorganism and characterizing and/or identifying the microorganism in the sample using the mass spectrum obtained.

La présente invention porte sur un procédé de séparation, de caractérisation et/ou d'identification de microorganismes dans un échantillon danalyse. Le procédé selon l'invention comporte une étape de lyse facultative pour la lyse de cellules qui ne sont pas des microorganismes qui peuvent être présentes dans l'échantillon danalyse, suivie par une étape de séparation ultérieure. Le procédé peut être utile pour la séparation, la caractérisation et/ou l'identification de microorganismes à partir d'échantillons complexes tels qu'un milieu de culture contenant du sang. L'invention porte en outre sur une interrogation de l'échantillon de microorganisme séparé par spectrométrie de masse afin de produire un spectre de masse du microorganisme et de caractériser et/ou didentifier le microorganisme dans l'échantillon à l'aide du spectre de masse obtenu.

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