Abstract:
A method for identifying, analyzing, and quantifying the cellular components of whole blood by means of an automated hematology analyzer and the detection of the light scattered, absorbed, and fluorescently emitted by each cell. More particularly, the aforementioned method involves identifying, analyzing, and quantifying the cellular components of whole blood by means of a light source having a wavelength ranging from about 400 nm to about 450 nm and multiple in-flow optical measurements and staining without the need for lysing red blood cells.
Abstract:
Aspects of the invention include WBC analysis reagents, systems and methods that can be used for analyzing a sample of whole blood to identify, classify, and/or quantify white blood cells (WBC) and WBC sub-populations in the sample. The WBC analysis reagents of the present disclosure generally include at least one membrane-permeable fluorescent dye, a WBC protecting reagent, and a surfactant. In some embodiments, the WBC reagents include a suitable amount of an osmolality adjusting component to adjust the osmolality of the WBC reagent into a desired range.
Abstract:
Aspects of the present disclosure include systems and methods. According to certain embodiments, provided is an integrated analysis system that includes a first module including a sample analysis component and a first internal container conveyor system. The integrated analysis system further includes a second module including a second internal container conveyor system. The first and second modules are positioned adjacent each other such that the first and second internal container conveyor systems are aligned and adapted to transport containers from the first module to the second module. Also provided are methods of analyzing and preparing samples (e.g., blood and body fluid samples), as well as components that find use within the analysis systems of the present disclosure.
Abstract:
Aspects of the invention include WBC analysis reagents, systems and methods that can be used for analyzing a sample of whole blood to identify, classify, and/or quantify white blood cells (WBC) and WBC sub-populations in the sample. The WBC analysis reagents of the present disclosure generally include at least one membrane-permeable fluorescent dye, a WBC protecting reagent, and a surfactant. In some embodiments, the WBC reagents include a suitable amount of an osmolality adjusting component to adjust the osmolality of the WBC reagent into a desired range.
Abstract:
Aspects of the invention include WBC analysis reagents, systems and methods that can be used for analyzing a sample of whole blood to identify, classify, and/or quantify white blood cells (WBC) and WBC sub-populations in the sample. The WBC analysis reagents of the present disclosure generally include at least one membrane-permeable fluorescent dye, a WBC protecting reagent, and a surfactant. In some embodiments, the WBC reagents include a suitable amount of an osmolality adjusting component to adjust the osmolality of the WBC reagent into a desired range.
Abstract:
Herein is provided a simple, reliable and accurate method for cellular analysis on hematology analyzers. In various aspects, the methods provide separation and/or differentiation between red blood cells (RBCs) and white blood cells (WBCs) by utilizing a fluorescent dye to selectively stain WBCs such that they emit stronger fluorescence signals. The method provides optimal detection limits on WBCs and RBCs, thereby allowing analysis of samples with sparse cellular concentrations. As few as one reagent may be used to prepare a single dilution for body fluid analysis, in order to simplify the body fluid analysis. Minimal damage to WBCs is attained using the lysis-free approach described in aspects of the disclosure.
Abstract:
Herein is provided a simple, reliable and accurate method for cellular analysis on hematology analyzers. In various aspects, the methods provide separation and/or differentiation between red blood cells (RBCs) and white blood cells (WBCs) by utilizing a fluorescent dye to selectively stain WBCs such that they emit stronger fluorescence signals. The method provides optimal detection limits on WBCs and RBCs, thereby allowing analysis of samples with sparse cellular concentrations. As few as one reagent may be used to prepare a single dilution for body fluid analysis, in order to simplify the body fluid analysis. Minimal damage to WBCs is attained using the lysis-free approach described in aspects of the disclosure.
Abstract:
Systems and methods for analyzing blood samples, and more specifically for performing a nucleated red blood cell (nRBC) analysis. The systems and methods screen a blood sample by means of fluorescence staining and a fluorescence triggering strategy, to identify nuclei-containing particles within the blood sample. As such, interference from unlysed red blood cells (RBCs) and fragments of lysed RBCs is substantially eliminated. The systems and methods also enable development of relatively milder reagent(s), suitable for assays of samples containing fragile white blood cells (WBCs). In one embodiment, the systems and methods include: (a) staining a blood sample with an exclusive cell membrane permeable fluorescent dye; (b) using a fluorescence trigger to screen the blood sample for nuclei-containing particles; and (c) using measurements of light scatter and fluorescence emission to distinguish nRBCs from WBCs.
Abstract:
Herein is provided a simple, reliable and accurate method for cellular analysis on hematology analyzers. In various aspects, the methods provide separation and/or differentiation between red blood cells (RBCs) and white blood cells (WBCs) by utilizing a fluorescent dye to selectively stain WBCs such that they emit stronger fluorescence signals. The method provides optimal detection limits on WBCs and RBCs, thereby allowing analysis of samples with sparse cellular concentrations. As few as one reagent may be used to prepare a single dilution for body fluid analysis, in order to simplify the body fluid analysis. Minimal damage to WBCs is attained using the lysis-free approach described in aspects of the disclosure.
Abstract:
Systems and methods for analyzing blood samples, and more specifically for performing a nucleated red blood cell (nRBC) analysis. The systems and methods screen a blood sample by means of fluorescence staining and a fluorescence triggering strategy, to identify nuclei-containing particles within the blood sample. As such, interference from unlysed red blood cells (RBCs) and fragments of lysed RBCs is substantially eliminated. The systems and methods also enable development of relatively milder reagent(s), suitable for assays of samples containing fragile white blood cells (WBCs). In one embodiment, the systems and methods include: (a) staining a blood sample with an exclusive cell membrane permeable fluorescent dye; (b) using a fluorescence trigger to screen the blood sample for nuclei-containing particles; and (c) using measurements of light scatter and fluorescence emission to distinguish nRBCs from WBCs.