摘要:
A detection instrument determines whether a specimen container (e.g., blood culture bottle) is positive for presence of microbial agent growth therein. When the container is deemed positive it is made available (e.g, transferred or exposed to) to an automated instrument performing identification and/or characterization of the microbial agent. The identification and/or characterization instrument removes a portion of the sample from the specimen container and places it into a disposable separation and concentration device. The microbial agent is concentrated via optional selective lysis of non-microbial agent cellular material which may be present and centrifugation. A reading module reads the concentrated microbial agent using spectroscopic methods, e.g., measurements of intrinsic fluorescence. Such interrogation may occur while the microbial agent remains concentrated in the disposable device.
摘要:
A device and method for determining antimicrobial resistance status of a microorganism from a positive sample bottle is provided. The device may include a housing having a chamber for receiving a vial containing a sample; a light source positioned to direct light through a side of the chamber; and a photodetector positioned such that light transmitted or scattered by the sample is sensed by the photodetector. The device may also include a heat source and/or an agitation device. The method includes providing the device, loading a sample from an automated sample culture system into the vial; interrogating the vial using the light source and the photodetector; and determining the antimicrobial resistance status of the microorganism in the sample based on the interrogating step. The method may also include heating and/or agitating the sample.
摘要:
A method for identification and/or characterization of a microbial agent present in a sample includes a step of analytical test data (e.g., obtaining intrinsic fluorescence values over a range of emission wavelengths) from the microbial agent. The analytical test data is transformed thereby minimizing strain to strain variations within an organism group. With the aid of a programmed computer, a multi-level classification algorithm coded as a set of processing instructions operates on the transformed analytic test data. The multiple levels correspond to different levels in a taxonomic hierarchy for microbial agents suspected of being in the sample.
摘要:
The present invention is directed to a separation device or container that can be used in the separation, isolation or pelleting of microorganisms from a test samples known to contain or suspected of containing said microorganisms. Subsequently, the separated, isolated or pelleted microorganism sample can undergo one or more interrogation steps to provide measurements useful for the characterization and/or identification of microorganism. In one aspect of the present invention, the interrogation steps can occur in situ in the separation device or container described herein.
摘要:
A device and method for determining antimicrobial resistance status of a microorganism from a positive sample bottle is provided. The device may include a housing having a chamber for receiving a vial containing a sample; a light source positioned to direct light through a side of the chamber; and a photodetector positioned such that light transmitted or scattered by the sample is sensed by the photodetector. The device may also include a heat source and/or an agitation device. The method includes providing the device, loading a sample from an automated sample culture system into the vial; interrogating the vial using the light source and the photodetector; and determining the antimicrobial resistance status of the microorganism in the sample based on the interrogating step. The method may also include heating and/or agitating the sample.
摘要:
The present invention is directed to a separation device or container that can be used in the separation, isolation or pelleting of microorganisms from a test samples known to contain or suspected of containing said microorganisms. Subsequently, the separated, isolated or pelleted microorganism sample can undergo one or more interrogation steps to provide measurements useful for the characterization and/or identification of microorganism. In one aspect of the present invention, the interrogation steps can occur in situ in the separation device or container described herein.
摘要:
A detection instrument determines whether a specimen container (e.g., blood culture bottle) is positive for presence of microbial agent growth therein. When the container is deemed positive it is made available (e.g, transferred or exposed to) to an automated instrument performing identification and/or characterization of the microbial agent. The identification and/or characterization instrument removes a portion of the sample from the specimen container and places it into a disposable separation and concentration device. The microbial agent is concentrated via optional selective lysis of non-microbial agent cellular material which may be present and centrifugation. A reading module reads the concentrated microbial agent using spectroscopic methods, e.g., measurements of intrinsic fluorescence. Such interrogation may occur while the microbial agent remains concentrated in the disposable device.
摘要:
A method for identification and/or characterization of a microbial agent present in a sample includes a step of analytical test data (e.g., obtaining intrinsic fluorescence values over a range of emission wavelengths) from the microbial agent. The analytical test data is transformed thereby minimizing strain to strain variations within an organism group. With the aid of a programmed computer, a multi-level classification algorithm coded as a set of processing instructions operates on the transformed analytic test data. The multiple levels correspond to different levels in a taxonomic hierarchy for microbial agents suspected of being in the sample