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6670115 |
Devices and methods for detecting analytes using electrosensor having capture reagent
The present invention relates to devices comprising electrosensors containing capture reagents, their preparation thereof, and their use for detecting, preferably, quantitative measurement, of...
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6669908 |
Urine test device
A device for collecting, testing and transporting a liquid specimen of urine or the like incorporates a cup or container and a cooperating lid which becomes sealed about its upper rim when the lid...
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6667159 |
Optical fiber biosensor array comprising cell populations confined to microcavities
A biosensor, sensor array, sensing method and sensing apparatus are provided in which individual cells or randomly mixed populations of cells, having unique response characteristics to chemical and...
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6663833 |
Integrated assay device and methods of production and use
An assay device for the detection of analyte in a sample, methods and immunoassay formats for performing an assay with or without the device, and methods for manufacturing the device are provided....
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6663837 |
Housing box for electronic chip with biological probes
The invention concerns a housing box for an electronic chip with biological probes, comprising a flat support device formed by assembling a first lower support and a second upper support, whereof...
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6663831 |
“One-device” system for testing constituents in fluids
A “one-device” system and method for collecting, extracting testing, and confirming various constituents in fluids is described. Particularly, it relates to the detection of various drugs of...
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6660534 |
IgG antibody testing method
A method of determining the concentration of IgG antibodies in the biological fluids of mammals. The assay may be performed in a lateral flow cassette or dipstick format where dehydrated...
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6660527 |
Fluid-transfer collection assembly and method of using the same
A fluid transfer and mixing collection assembly includes a base and a test media, an inlet check valve, and an outlet check valve carried by the base. A bladder containing a fluid and a flexible...
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6656744 |
One-step lateral flow assays
The efficiency and accuracy of one-step lateral flow assays can be improved by employing more efficient binding between participants in labeling and capture. Thus, in addition to...
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6656741 |
Air gap for controlling sample absorption and hematocrit dependence
A method and apparatus for controlling the absorption of a liquid sample through an absorbent layer ( 2 ) and reducing the effect of hematocrit by applying the sample on one side of the layer ( 2 a...
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6656428 |
Automated point of care detection system including complete sample processing capabilities
The present invention relates to cost effective analytical instruments for determining the presence or amount of an analyte in a sample. The analytical instruments utilize an assay cartridge which...
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6656745 |
Devices and methods for a multi-level, semi-quantitative immunodiffusion assay
The present invention relates to an immunoassay device featuring a semi-quantitative, multi-level method for determining the presence and an amount of an analyte. The immunoassay involves a device...
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6656429 |
Sterilizer vacuum test pack
A test pack for testing the adequacy of air removal in a prevacuum sterilizer. The test pack including a first plurality of planar sheets of substantially porous material disposed to form a stack;...
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6653152 |
Sensor disk having radial grooves and optical assaying method using same
An optical assaying method and system having a movable sensor is described. In one aspect, the present invention is a sensing system having a rotating sensor disk coated with indicator dyes...
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6652809 |
Apparatus for performing photometric assays
There is provided according to the invention an apparatus for the performance of photometric assays comprising: 1. A housing; 2. A plurality of translucent capillaries each being sealed at one end;...
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6649360 |
Test strip for detecting gastric problems based on the presence of urease
A testing apparatus for detecting urease in a gastric material taken from a human or lower animal subject is disclosed, the apparatus comprising a dry indicating composition responsive to urease, a...
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6645758 |
Containment cuvette for PCR and method of use
A cuvette and a method of use prevent nucleic acid amplified by PCR technology from being released to the atmosphere, while still proceeding to a detection step to determine whether or not the...
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6642058 |
Analysis method using dry chemical analysis element
An analysis method using a dry chemical analysis element accurately measures change in optical density indicating the composition of a liquid sample without requiring accurate control of the amount...
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6638480 |
High sensitivity test system for the colorimetric determination of specific gravity or total dissolved solids in aqueous samples
A highly sensitive and convenient test method, composition and device for the facile calorimetric determination of total dissolved solids in an aqueous sample having a low specific gravity is...
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6638769 |
Analysis method and cuvette therefor
A method for hemoglobin determination is described which includes the steps of introducing a sample of undiluted whole blood by capillary action into a disposable microcuvette having at least one...
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6632681 |
Reagent delivery device and method of use
A device and method for filtering a biologically derived sample and for mixing the sample with a reagent, comprising a fluid container defining a reservoir compartment and including a container...
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6632603 |
Non-captive substrate liquid phase immunoassay
An immunoassay of a liquid biological specimen for a specific analyte is conducted by forming a test sample by contacting the specimen with: (1) a binding substance of a ligand, antiligand or...
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6627153 |
Integrated assay for organ function, drugs and/or one or more metabolites
A test device that assesses the concentration of an organ marker, a drug marker and a metabolite associated with the drug/organ interaction.
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6627158 |
Device for depositing cells on an analytical plate
A device for depositing cells on an analytical plate includes a reception chamber which is to be placed above the analytical plate and whose bottom is open, and a material for absorbing a fixative...
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6627159 |
Centrifugal filling of sample processing devices
The present invention provides methods and devices for distributing sample material to a plurality of process chambers in a sample processing device by rotating the device about an axis of...
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6627444 |
Method and solid phase calibration sample for calibration of analytical instructions
A method and a solid phase calibrant are provided suitable for use by untrained personnel to calibrate an analytical instrument under field conditions away from a laboratory. Filter discs or other...
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6627152 |
Fluid testing apparatus
A fluid testing apparatus comprises a vessel for collecting a fluid, a removable cap secured to the top of the vessel, and a movable carrier to transport a portion of the fluid in the vessel to...
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6627406 |
Sample evaporative control
Devices and methods are provided using microfluidic devices for manipulating small volumes and determining a variety of chemical and physical events. The devices rely upon an opening to the...
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6623696 |
Biochip, apparatus for detecting biomaterials using the same, and method therefor
The present invention provides a biochip which includes: a substrate having a center hole at a central portion, an biomaterial region aranged at a circumferential portion of the top surface of the...
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6623698 |
Saliva-monitoring biosensor electrical toothbrush
A biosensor electrical toothbrush having a brush head with a test channel and a renewable biosensor system within the test channel for performing routine saliva tests. The brush head stimulates...
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6620626 |
Antigen detection device and method
A monitor having a hollow semipermeable casing with a test strip is agitated in a sample volume of suspect liquid. The monitor is partially filled with tiny colored beads confined to its interior...
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6616893 |
Diagnostic testing kit for collection and testing of fluid samples with user configurable test strips and timer
A diagnostic testing kit for collection of fluid samples comprising a reservoir cup insertable into a container vessel. Fluid placed in the cup is communicated to reactive test strips located in a...
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6613512 |
Apparatus and method for correcting for variable velocity in microfluidic systems
Electrokinetic devices having a computer for correcting for electrokinetic effects are provided. Methods of correcting for electrokinetic effects by establishing the velocity of reactants and...
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6610256 |
Image processing and analysis of individual nucleic acid molecules
A method for observing and determining the size of individual molecules and for determining the weight distribution of a sample containing molecules of varying size, which involves placing a...
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6607700 |
Gas diffusion sampling and measurement system for occupational dosimetry and air quality monitoring as exemplified by a carbon monoxide occupational dosimeter
CO exposure is a serious public health problem in the U.S., causing both morbidity and mortality (lifetime mortality risk approximately 10 −4 ). Sparse data from population-based CO exposure...
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6607922 |
Immunochromatographic assay method and apparatus
An immunochromatographic assay employing superparamagnetic particles to lable the target analytes. An opaque cover prevents misinterpretive readings in field situations and provides a protective...
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6605444 |
Method and device for obtaining and detecting immunologically active substances from the gas phase
A method is disclosed for obtaining and/or immunologically detecting an analyte contained in a gas phase by immunologically binding the analyte to a binding partner thereof contained in a gas- and...
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6605438 |
Lyophilizing of liquid drops having arbitrary edges and application thereof to microarrays of biological reagents
The disclosure relates to the stabilization of a fluid drop comprising a liquid solvent and solute, so that upon drying of the solvent, the solute is not preferentially concentrated at the edges of...
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6605476 |
Immunochromatographic assay device
A chromatography immunoassay device is described which can be used more easily, is protected from moisture and/or oxygen more effectively and can be produced at a lower cost than known...
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6605440 |
Method for determining analyte level
A multilayer analytical element for determining a level of an analyte on a substrate and adapted for use with hydrogen peroxide and an affinity-enzymatic compound of formula A-C-B, wherein A is a...
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6605475 |
Apparatus and method for sample delivery
Apparatus and methods have been developed to deliver automatically a sample to a reaction vessel, an analytical device or any location where sample introduction or deposition is desired. A sample...
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6605471 |
Method and system for determining at least one parameter of at least one sample of a physiological liquid, a holder and a test device
The present invention relates to a method for determining at least one parameter of samples of physiological liquids, to test devices which may be used in the method, to a holder comprising a...
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6603987 |
Hollow microneedle patch
A test strip is provided for use in the determination of the concentration of an a chemical in blood. The test strip comprises a plurality of microneedles and a test area. Each microneedle is...
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6599480 |
Apparatus for obtaining increased particle concentration for optical examination
The present invention relates to a method and apparatus for analyzing a blood or other biological fluid sample in a quiescent state, whereby particulate constituents of biological samples that...
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6599475 |
Apparatus for producing thin liquid samples for microscopic analysis
The present invention relates to the field of diagnostics by means of microscopic sample analysis, and specifically relates to a method and apparatus for preparing thin microscopic samples of...
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6596502 |
Kit and method for detecting fecal parasites
The invention concerns a home kit and a method for detection of the presence of a fecal parasite in a stool.
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6593142 |
Polymeric food spoilage sensor
A polymeric food spoilage sensor comprises a polymer containing a polyazamacrocyclic transition metal complex. The complex selectively binds biogenic amines, such as cadaverine, putrescine and...
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6593090 |
High resolution DNA detection methods and devices
The present invention provides methods and devices for detecting a target nucleic acid molecule. A set of oligonucleotide probes integrated into an electric circuit, where the oligonucleotide...
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6592815 |
Analytical test element with a narrowed capillary channel
The invention concerns an analytical test element for the determination of an analyte in a liquid containing a detection element and a channel capable of capillary liquid transport which has a...
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6592821 |
Focusing of microparticles in microfluidic systems
Methods and systems for particle focusing to increase assay throughput and sensitivity in microscale systems are provided. The invention includes methods for providing substantially uniform flow...
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