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Class 436/17 - Preparation composition (e.g., lysing or precipitation, etc.)


Subclass of Class 436 - Chemistry: analytical and immunological testing
Definition: Compositions which are used to prepare a sample for a chemical
No. of patents: 358
Last issue date: 09/06/2011


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NumberTitleIssue Date
8012757Method for producing standard sample for use in quantitative determination of red phosphorus in resin
Provided are a method for preparing a standard sample in which a uniform dispersion of a predetermined concentration of red phosphorus is guaranteed even in a very small amount, and an analytical method for quantitatively determining red phosphorus contained in a re...
09/06/2011
7588942Standard/reference/control for blood coagulation testing
A whole-blood-based substitute composition that is useful in coagulation assays as a standard, reference, control, calibrator, linearity verifier, or training material is prepared by combining a red blood cell lysate that is free of plasma, leukocytes, and platelets...
09/15/2009
7550298Automated immunohistochemical and in situ hybridization assay formulations
Provided herein are reagents for use in an automated environment for cell conditioning of biological samples wherein the cells or tissues are predisposed for access by reagent molecules for histochemical and cytochemical staining procedures. The reagents include, bu...
06/23/2009
7449337Lytic reagent and method for leukocytes differential in whole blood
A lytic reagent composition and methods for differential analysis of leukocytes are disclosed. In embodiments, the analysis may utilize optical measurements in flow cytometry based hematology analyzers. The reagent system includes an anionic surfactant in a hypotoni...
11/11/2008
7416891Reagent and method for classifying leucocytes
A reagent for classifying leucocytes, including: a) at least one of surfactant selected from a cationic surfactant, an amphoteric surfactant, and the combination thereof; b) an organic compound having phenyl or heterocyclic group, wherein when the surfactant is a ca...
08/26/2008
7416892Method and system for microfluidic manipulation, amplification and analysis of fluids, for example, bacteria assays and antiglobulin testing
A microfluidic system for isolation and amplification of DNA or RNA from aqueous solutions and detection of the DNA or RNA on a lateral flow detection strip, including a disposable microfluidic card for use in analysis of bacteria in platelets and an analysis of sex...
08/26/2008
7413905Reagents and methods for classifying leukocytes
The present invention relates to a reagent for classifying leukocytes including (a) at least one surfactant capable of lysing erythrocytes and partly damaging the cell membrane of leukocytes, (b) at least one organic compound bearing an anionic group capable of bind...
08/19/2008
7405047Method for estimation of the amount of specific cell types
The present invention relates to the estimation of the amount of subtypes of specific cells, for example the number of certain subtypes of leukocytes, by measurements of unique proteins in extracts of blood and other biological material. The knowledge of the number ...
07/29/2008
7390662Method and apparatus for performing platelet measurement
The present invention relates to a hematology instrument system that discriminates platelets from red blood cells, debris and other particles within a blood sample. The instrument system uses an optical trigger and collects data at optical sensor locations relative ...
06/24/2008
7390664Method and apparatus for high throughput catalysts screening and optimization
The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize an...
06/24/2008
7361479Assay
The present invention provides a method of determining the presence or amount of newly synthesized antibody in a sample in response to an immunogen by detecting the released antibodies or parts thereof in a sample containing lymphocytes which have been disrupted whe...
04/22/2008
7354767Reference control composition containing a nucleated red blood cell component made of non-nucleated blood cells
A reference control composition containing a nucleated red blood cell component and the method of making are disclosed. The reference control composition includes a nucleated red blood cell component made of fixed non-nucleated blood cells and a suspension medium. T...
04/08/2008
7354727Method and apparatus for classifying B-lymphocytes
A B-lymphocyte classifying method includes the steps of (1) preparing a measurement sample by mixing a blood sample with a lysing reagent to lyse erythrocytes and to shrink the B-lymphocytes in the blood sample, (2) letting the measurement sample flow through a flow...
04/08/2008
7354773Method and apparatus for preparing cell samples for intracellular antigen detection using flow cytometry
A method and apparatus for preparing biological cell samples for intracellular analysis. The invention is based upon the recognition that many of the steps of the conventional methods for such sample preparation can be eliminated, leading to a process that readily l...
04/08/2008
7351546Flow cytometric, whole blood dendritic cell immune function assay
The invention provides a flow cytometric method for measuring dendritic cell function in whole blood, comprising: (a) contacting a whole blood sample with a dendritic cell activator; (b) adding to the sample a plurality of dendritic cell-distinguishing antibodies an...
04/01/2008
7344890Method for discriminating platelets from red blood cells
A method for discriminating and quantifying platelets within an analyzed blood sample involves initially diluting the blood sample with a ghosting reagent that causes a change in the index of refraction of the red blood cells. Owing to the change in the index of ref...
03/18/2008
7338809Method for assaying whole blood
In a method for measuring an analyte, which comprises a reaction step of forming a reaction system including a sample containing whole blood, a first substance carried by a solid carrier and specifically binding to an analyte contained in the sample and a second sub...
03/04/2008
7332295Multidimensional leukocyte differential analysis
This invention relates to an improved procedure for the multiparameter analysis of leukocyte subpopulations from peripheral blood, bone marrow or any body fluid containing blood nucleated cells, including the quantification of each subpopulation in terms of cells pe...
02/19/2008
7316897Process, device and reagent for cell separation
A cell separation process for the isolation of pathogenic cells in a small concentration in a biological fluid specimen, including treating the biological specimen to modify in a differential manner selected rare cells and other cells and causing differential migrat...
01/08/2008
7303920Staining reagent for staining hematology samples in an automated staining apparatus
Automated staining equipment that can mix reagents is used to spray a Romanowsky stain onto slide mounted specimens which are then briefly centrifuged. The centrifugation step removes excess stain leaving only a thin film. Depending on the time of the centrifugation...
12/04/2007
7300797Lysis reagent for blood cell analysis
A multifunctional reagent for erythrocytes containing an amount sufficient to produce the lysis of erythrocytes or the sphering of erythrocytes in such a way that they can be detected by a cytometer or an automatic counting device, of a carbamate or of an agent indu...
11/27/2007
7300763Method of testing myelotoxicity with the use of flow cytometer
The objects of the present invention are to solve low test efficiency and low accuracy which are problems encountered in the conventional methods for testing myelotoxicity of a drug by observing smears. To this end, markers for discriminating and identifying hematop...
11/27/2007
7294307Apparatus for pumping and directing fluids for hematology testing
An apparatus is provided for hematology testing, which has a sensing unit defining a counting orifice for the flow of a blood sample through the counting orifice to analyze the blood sample, and a pump unit having three syringes. A first syringe is coupled in fluid ...
11/13/2007
7285417Reference control containing a nucleated red blood cell component
A method of making a reference control containing a nucleated red blood cell component includes providing a blood cell containing a nucleus; treating the blood cell with a treatment solution to alter a nucleus property from a natural value to a target value suitable...
10/23/2007
7285418Method and kit for the diagnosis of troponin I
The invention provides a method for assaying for troponin I in a sample such as serum, the method comprising a determination of the troponin I concentration in a sample using a standard preparation that comprises a complete native troponin complex. One exemplary ass...
10/23/2007
7282475Compositions and methods employing zwitterionic detergent combinations
The present invention provides lysis reagents, containers, methods and kits relating to the extraction or the extraction and isolation of a cellular component from a host cell. More specifically, the invention provides combinations of zwitterionic compounds that may...
10/16/2007
7282369Tests for the rapid evaluation of ischemic states and kits
The present invention relates to rapid methods for the detection of ischemic states and to kits for use in such methods. Provided for is a rapid method of testing for and quantifying ischemia based upon methods of detecting and quantifying the existence of an altera...
10/16/2007
7279136Metering technique for lateral flow assay devices
A diagnostic method and associated test kit for detecting an analyte residing in a test sample is provided. A sample membrane is utilized having a collection region and a detection region, the collection region having a known saturation volume for the intended test ...
10/09/2007
7256048Method for detection of malaria and other parasite infections
A method of detecting parasite infection, particularly malaria, includes mixing a blood sample with a lytic reagent system to lyse red blood cells, and to form a sample mixture; performing a differential analysis of white blood cells of the sample mixture on a blood...
08/14/2007
7247484Hematology reagent and methods
A reagent system is provided for substantially lysing red blood cells in a whole blood sample prior to leukocyte analysis, which system includes a first reagent for substantially lysing the red blood cells in the whole blood sample, and a second reagent for quenchin...
07/24/2007
7235404Cyanide-free lytic reagent composition and method of use for hemoglobin and white blood cell measurement
A cyanide-free lytic reagent composition and method of use for measuring the total hemoglobin concentration and white blood cells in a blood sample are disclosed. The lytic reagent composition includes a quaternary ammonium surfactant to lyse red blood cells and rel...
06/26/2007
7166477Muscle sample prepared for prion assay
A method of preparing a sample of muscle tissue and of assaying the prepared sample to determine the presence of prions in the sample is disclosed. The muscle tissue is homogenized and mixed with a complexing agent which forms a complex with a higher specific gravit...
01/23/2007
7160723Cell separation compositions and methods
The invention provides compositions and methods for cell separation. These reagents and techniques specifically agglutinate cells via surface antigen recognition and can be used to recover even rare cell types in high yield. ...
01/09/2007
7151000Method of concentrating proteins from serum
A sample is prepared from blood in a manner which makes it possible to further analyze proteins in the sample, e.g. to detect prions in the sample. Blood is extracted, allowed to clot and subjected to separation processing (e.g. centrifugation) to obtain serum. The ...
12/19/2006
7150793Method of reducing materials contained in juice
A process system that uses a reduced amount of lime or other base to clarify or purify juice obtained from plant material such as sugar cane, sugar beets, or sweet sorghum. Specifically, apparatus and methods to reduce volatile materials in juice providing a product...
12/19/2006
7135341Reference control containing a nucleated red blood cell component
A method of making a reference control containing a nucleated red blood cell component includes providing a blood cell containing a nucleus; treating the blood cell with a treatment solution to alter a nucleus property from a natural value to a target value suitable...
11/14/2006
7063980Pretreatment kit for saliva and pretreatment method for saliva
A pretreatment kit and a pretreatment kit for saliva in identification and quantitative determination of mutans streptococci by immunochromatography utilizing an antigen-antibody reaction, which can remove aggregation caused by mucin and chain formation of mutans st...
06/20/2006
7064823Consumable tube for use with a flow cytometry-based hematology system
The present invention is a flow cytometry-based hematology system useful in the analysis of biological samples, particularly whole blood or blood-derived samples. The system is capable of determining at least a complete blood count (CBC), a five-part white blood cel...
06/20/2006
7049093Method of classifying and counting nucleated bone marrow cells
A method for classifying and counting nucleated bone marrow cells comprises the steps of: (1) mixing a sample of bone marrow fluid with an erythrocyte lysing agent to lyse erythrocytes in the sample and render leukocytic cells and erythroid cells in the sample suita...
05/23/2006
7026110Reagent for determination of leucocytes and measurement of haemoglobin in a sample of blood
The invention concerns a reagent for determination of leucocytes and measurement of haemoglobin in a sample of blood. This reagent comprises a buffer system that is suited to adjust selectively the pH of the reagent to an acidic value, at least one detergent of cati...
04/11/2006
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