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6485982 |
Test device and method for colored particle immunoassay
Disclosed is a test cell and a method for detection of a preselected ligand in a liquid sample such as a body fluid. The test cell includes an elongate outer casing which houses an interior...
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6485915 |
Analytical element for species-specific detection of nucleic acids
The present invention concerns a method for the detection of nucleic acids on an analytical element which contains a sample application zone and a detection zone, the analytical element enabling...
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6479018 |
Detection of a gaseous substance emanating from a layer of polymeric composition
Detection of an evolving or diffusing gaseous substance emanating from an irradiated or thermolyzed layer of polymeric composition in semiconductor processing or similar processes is disclosed. The...
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6475805 |
Method for detection of an analyte
A test device, system and method, the device composed of an elongated, toothbrush-shaped, transparent, plastic housing and a lateral-flow test strip for the detection of an analyte, such as a...
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6464939 |
Saliva testing and confirmation device
A saliva testing and confirmation device generally includes an expresser cup adapted to receive and compress a foam collection swab capable of absorbing a fluid specimen such as saliva. The device...
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6461873 |
Caffeine detector
The caffeine detector uses a paper chromatographic technique to measure the concentration of caffeine in a beverage. The device includes a well or other receptacle for containing a predetermined...
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6455001 |
Functional layers of high precision, process for their production and test strips containing these functional layers
A skeleton-free functional layer of high precision which contains a wetting agent of formula I, II and/or III R 1 —CO—N(R 2 )—CH 2 —COOMe (I) R 1 —CO—N(R 2 )—CH 2 —CH 2 —SO 3 Me...
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6451619 |
Monitoring methods and devices for use therein
Methods, devices and test kits for monitoring the ovulation cycle, involve testing the body fluid, e.g. urinary, concentration of one or more analytes. Preferably estrone-3-glucuronide and...
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6444169 |
Test-device for threshold glucose detection in urine
Devices and test kits are provided for glucose detection and quantification in urine. The devices and kits comprise a chromogenic indicator mixture comprising a first indicator capable of color...
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6436722 |
Device and method for integrated diagnostics with multiple independent flow paths
Invention performs an assay to determine presence or quantity of specific analyte in fluid sample. Representative device has two separate flow paths established sequentially in device with a single...
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6436716 |
Aldehyde test strip
A composition, method, and device for quantitatively determining the concentration of an aldehyde in a sample are disclosed. The device includes a test pad having a suitable carrier matrix...
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6436311 |
Sampling material for a carbonyl compound in a gas
A sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger; and a sampling cartridge...
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6436347 |
Indicator device
A fast-response colorimetric carbon dioxide indicator device which is substantially insensitive to humidity and comprises a chemically inert substrate and an indicator composition supported by the...
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6436649 |
Method for detecting and/or quantifying a hapten in a homogeneous phase and device for implementation thereof
The invention discloses a method for detecting and/or quantifying a hapten in a homogeneous phase, comprising the following steps: adding a known quantity of a hapten inhibitor complex to the...
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6418606 |
Method of manufacturing an assaying device
An assaying device and a method of manufacturing same are provided. The assaying device includes a unitary, absorbent membrane having multiple reagent stripes incorporated therein. The reagent...
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6417005 |
Covalently immobilized fluoroionophores as optical ion sensors
Fluoroionophores that are functionalised with reactive groups and correspond to the formula I—R 1 —F—R 2 —G, wherein I is a monovalen residue of an ionophore, wherein F is a divalent...
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6413778 |
Methods for the detection and identification of crystals in biological fluids
The present invention relates to devices, methods and kits for the detection and identification of crystals which may be present in a biological fluid, such as urine from a cat. The device may...
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6413784 |
Multi-sectioned fluid delivery devices for detecting target molecules by immunoassay
Multi-sectioned fluid delivery devices with sensor membranes for use in detection of target molecules in gas or liquid samples are provided.
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6413473 |
Multicomponent test systems useful in analyzing liquid samples, and uses therefor
The invention relates to multicomponent test systems which indicate the concentration of one or more analytes in a liquid sample, as well as the effect of action on the sample which results in an...
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6410332 |
Sampling and analysis of reactions by trapping reaction components on a sorbent
Methods and devices for rapidly analyzing groups of reactions are disclosed. The method includes the steps of contacting a fluid sample from one of the reaction mixtures with a sorbent, trapping at...
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6410341 |
Analytical test device and method for use in medical diagnoses
An analytical test device is described for the immunochromatographic determination of the presence of one or more analytes in fluid samples. The device is configured such that the sample is allowed...
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6406914 |
Radiation exposure dose-history indicator
The present composition for use in radiation exposure dose-history indicators comprises a radioactive ray-absorber and/or a radioactive ray-excited fluorescence-emitting agent, a color-developing...
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6406922 |
Device for the testing of body fluid samples
A drug of abuse test kit for testing low volumes of a fluid sample having a transparent flat bag container for retaining a fluid sample to be tested and the open end of the container has a...
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6403383 |
Diagnostic test kit for immunological assays of fluid samples
A diagnostic test kit has a cup-like container for retaining a fluid sample to be tested and the open top end of the container is closed by a closure cap on the open end. There is a slit in the...
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6399398 |
Assay device
An assay device comprises a sample-collecting wick made from non-woven fabric material laminated to plastics sheet. Preferably, the fabric is a 30:70 blend of viscose and polyester, and has a...
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6395227 |
Test strip for measuring analyte concentration over a broad range of sample volume
A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into...
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6391652 |
Immunoassay method and immunoassay kit
An immunoassay method comprising bringing an immobilized phase comprising, at different positions on a water-absorbable base material, at least two first immunity substances capable of specifically...
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6391541 |
Apparatus for analyzing a fluid sample
A cartridge for separating a desired analyte from a fluid sample has a sample flow path and a lysing chamber in the sample flow path. The lysing chamber contains at least one filter for capturing...
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6376252 |
Preparation and method for cat box filler additive capable of detecting feline lower urinary tract disease (FLUTD)
Test devices and methods are provided for detection of feline lower urinary tract disease. The test devices comprise a matrix impregnated with a color indicator and a stabilizer wherein the...
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6376195 |
Indirect label assay device for detecting small molecules and method of use thereof
A chromatographic strip positive readout binding assay device and method suitable for quick, sensitive and reliable field testing for small molecules such as environmental contaminants, drugs of...
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6376256 |
Rapid process for arraying and synthesizing bead-based combinatorial libraries
A mixture of beads of uniform size from is deposited in an array by establishing discrete attachment areas each consisting either of a droplet of adhesive or a small area of a continuous adhesive...
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6375896 |
Swab analyzer for the immunochemical detection of substances
A swab analyzer with advantageous handling and detection sensitivity for the immunochemical detection of substances. The analyzer has a housing, an eluent application zone (a swabbing pen 2 ) and...
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6375897 |
Urine collection cup
A urine collection cup device is provided including a clear plastic cup, a reagent strip disposed against an inner surface of the cup and adhered thereto by means of a plastic laminate or adhesive...
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6372504 |
Method and apparatus for conveying a sample to a sample vessel
Conveying of a sample disk method and apparatus for into a reaction vessel is described wherein the sample disk ( 11 ) is attached to a tooth ( 2 ), where the sample disk is further conveyed to the...
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6372515 |
Device for the testing of fluid samples and process for making the device
A test card for drugs of abuse has a thin flat member having the size and shape of a business card. A plurality of immunoassay test strips extend longitudinally from top to bottom at the card and...
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6372511 |
Swabbing means and methods of use
Swabbing structures and methods of use are provided that enable a test surface to be swabbed, and subsequently facilitate a quantitative determination of the quantities of analyte collected from...
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6372182 |
Integrated body fluid collection and analysis device with sample transfer component
A single, integrated device in which a body fluid (e.g., blood) of a human or animal can be both collected and analyzed easily and without risk of contamination is disclosed. The collection portion...
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6372516 |
Lateral flow test device
A immunochromatographical test device including a cap, an absorbent pad, a membrane, a test strip, a holder, and a housing is disclosed. The housing contains the membrane and the test strip which...
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6372514 |
Even fluid front for liquid sample on test strip device
Test strip device for accepting a liquid sample and forming an even fluid front across the test strip. When the sample is applied to a contacting surface, it runs down the surface where it collects...
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6368876 |
One step immunochromatographic device and method of use
This invention relates to a lateral flow immunochromatographic assay device without a plastic housing. The assay includes a sample receiving region, analyte detection region and end region all made...
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6362005 |
Nitrogen dioxide gas sensing method, nitrogen dioxide gas sensor element, and nitrogen dioxide gas sensor using the same
In this invention, a mixture of a diazotizing reagent which reacts with nitrous ions to produce a diazo compound, a coupling reagent which couples with a diazo compound to produce an azo dye, and...
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6346417 |
Sterilization monitors
A sterilization monitor includes a substrate and an monitor composition. The monitor composition contains a colorant and a halogen source and undergoes a distinct color change when exposed to a...
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6344333 |
Reagent-free immunoassay monitoring electrode assembly
The present invention relates to an apparatus to perform reagent-free assays, which apparatus utilizes an all solid probe having an enzyme label that acts on a substrate by obtaining electrons...
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6338821 |
Method and device for measuring blood coagulation or lysis by viscosity changes
The present invention provides a single-use electronic device and test card for use therein which performs a coagulation or lysis assay of a blood sample. The device includes a housing having an...
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6338822 |
Optical carbon dioxide sensors
A sensor for the optical determination by fluorescence of carbon dioxide in liquid and gaseous media, which consist essentially of a carrier and a light-sensitive layer applied thereto. In addition...
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6337211 |
System and a method for detecting antifreezing substances in a hermetic compressor
The invention relates to a system and a method for detecting antifreezing substances in a hermetic compressor.
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6335171 |
Immunochemical determination of substances contained on textile fibers or polymers
A method for the detection of substances contained on textile fibers or other natural or synthetic polymers is disclosed. The contained substances are identified with immunochemical methods, where...
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6335205 |
Method and test strip for determining an analyte
The invention concerns a method for the immunological determination of an analyte on a chromatographic test strip containing one or several absorbent matrices on a carrier material which are in...
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6328931 |
Analyte collection and assaying assembly
Swabbing and assaying structures, and selected methods of use, enable a test surface to be swabbed, and subsequently facilitate a quantitative determination of the quantities of analyte collected...
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6326214 |
Immunity testing device
An immunity testing device formed of a thin sheet of material folded to three portions, and the two end portions; named "front cover"0 and "back cover"; fold back to different sides of the center...
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