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| Number | Title | Issue Date |
| 7413892 | Systems and methods for molecular recognition Acoustic wave devices coated with a biolayer are described for the detection target bio-molecules. The acoustic wave device is connected in an oscillator circuit, and the frequency shift Δf resulting from a biomolecular event is recorded. Further described are the ... | 08/19/2008 |
| 7384599 | Apparatus for drug testing An apparatus for testing for the presence of a drug is provided. The apparatus includes a first drug testing reagent, a first ampule, a vessel that contains the first ampule, and a fracturing means. The first drug testing reagent contains a controlled substance dete... | 06/10/2008 |
| 7374946 | Method for the detection of compounds comprising methylenedioxyphenyl Process and a test kit for the detection of drugs of methylenedioxy amphetamine family and derivatives, are disclosed. The process comprises (a) sampling sufficient amount of a material, suspected to be examined comprise of said methylenedioxyphenyl group; (b) admix... | 05/20/2008 |
| 7267799 | Universal optical imaging and processing system The present disclosure is directed, in general, to an optical reading system, a universal testing cartridge, and a method of coupling optical reading systems. In a particular illustrative embodiment, the optical reading system includes a universal test cartridge rec... | 09/11/2007 |
| 7262060 | Method for assessing nicotine dependence A method for assessing nicotine dependence, which involves measuring a whole blood, serum or platelet-rich plasma serotonin level and rating the whole blood, serum or platelet-rich plasma serotonin level on such a scale that the higher it is, the higher nicotine dep... | 08/28/2007 |
| 7238533 | Personal illicit drug detection method Personal illicit drug detecting apparatus is disclosed which includes a substance chemically reactive to a suspected drug. The substance is provided in the form of a layer positioned on at least one finger of a user. The substance can be blended into finger nail pol... | 07/03/2007 |
| 7204125 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 04/17/2007 |
| 7169550 | Diffraction-based diagnostic devices A biosensor includes a substrate with a receptive material layer of radiation-absorbing member (RAM)-tagged biomolecules disposed thereon. The receptive material is specific for an analyte of interest. A pattern of active and deactivated areas of the receptive mater... | 01/30/2007 |
| 7148070 | Diagnostic detection method The present invention relates to a diagnostic test kit and method for detecting the presence of certain metabolic by-products in human urine. The kit includes a test strip with an exposed face side containing chemical reagents which react in the presence of selected... | 12/12/2006 |
| 7060505 | Assay device An assay device and method are provided which allow the determination of the presence or absence of at least one analyte in a test sample, while providing specific identification of the test subject. The assay device includes a reaction medium having at least one re... | 06/13/2006 |
| 6949344 | Hair analysis method A method the direct analysis of an analyte in keratinized structures, e.g., hair and fingernails, which comprises preparing a mixture containing a low redox potential activator compound such as dithiothreitol or dithioerythritol, an enzyme suitable for the digestion... | 09/27/2005 |
| 6895801 | Pressure activated sampling system Screening of items for the presence of contaminants, such as explosives residue, is accomplished by subjecting an item loaded into a pressure chamber to a pressure substantially in excess of atmospheric pressure conditions and rapidly decompressing the item to the a... | 05/24/2005 |
| 6858399 | Test for oxidative stress using cell suspensions This invention provides a method of measuring oxidative response of cells without recourse to preparation of cell culture. The process involves: 1) preparing suspensions of cells from a living host in isotonic solutions, ... | 02/22/2005 |
| 6818452 | Lateral flow contact test apparatus A test strip assembly for detecting the presence of a substance in liquid sample comprises a contact detection pad in communication with a reagent-free absorbent strip. The absorbent strip receives the liquid sample and communicates it to the contact detection pad v... | 11/16/2004 |
| 6797481 | Simultaneous screening of multiple analytes Methods, compositions and kits are disclosed. The methods are directed to determining the presence of one or more analytes in a sample suspected of containing any one of a plurality of the analytes. A combination is provided comprising in a medium (i) the sample, (i... | 09/28/2004 |
| 6730519 | Method of preparing delta-9-tetrahydrocannabinol A method for the isolation of delta-9-tetrahydrocannibinol (THC) from, Cannabis plant material, wherein delta-9-THC Acid and THC are separately obtained including the steps of extracting the Cannabis plant material, chelating delta-9-THC acid on alumina solid suppor... | 05/04/2004 |
| 6713306 | Method for identification of flunitrazepam A method for detecting the presence of flunitrazepam in a sample. Flunitrazepam contained within the sample is reduced and hydrolyzed by the addition of a hydrolyzing agent and a reducing agent. A visualizing agent is provided to combine with the reduced and hydroly... | 03/30/2004 |
| 6709633 | Disposable devices for testing body fluids A self-contained disposable device to be used in testing a body fluid, particularly urine. The device is in the form of a 3-ply composite comprising an intermediate ply and outer plies on opposite sides thereof. The intermediate ply has a cavity for retaining a test... | 03/23/2004 |
| 6702988 | Automatic on-site drug testing system and method A system and method for on-site drug testing rapidly and objectively performs a drug screen on a urine sample at a collection center. The system includes a plurality of collection centers, wherein each collection center includes a test station for perform... | 03/09/2004 |
| 6602892 | Methods for nicotine replacement dosage determination A method for predicting nicotine replacement dosage to achieve a target nicotine serum concentration relies on measuring blood nicotine concentration prior to smoking cessation. At least two values corresponding to other patient characteristics, such as b... | 08/05/2003 |
| 6558956 | Method and apparatus for detection of a controlled substance Techniques and devices for detecting and analyzing controlled substances and the like are discussed including highly reactive sensor molecules which are coated on a spectroscopic sample surface (4) and which may chemically react with a given analyte to fo... | 05/06/2003 |
| 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 test volume of the beverage. A paper strip is suspended so t... | 10/08/2002 |
| 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 recloseable closure. The container is maintained in a substantiall... | 06/18/2002 |
| 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 closure cap to receive a multiple test card having a pluralit... | 06/11/2002 |
| 6391261 | Device for detecting analytes related to sample pH A device for measuring, concurrently from the same sample solution, the pH and presence or quantity of an analyte in the solution. The pH and analyte measuring sections of the invention are contained within the same holding structure.... | 05/21/2002 |
| 6365416 | Method of preparing delta-9-tetrahydrocannabinol A method of preparing THC using extraction of plant material with a non-polar solvent followed by vacuum distillation and chromatography.... | 04/02/2002 |
| 6358743 | Contraband substances reference sample carrier A carrier for contraband substances to be used as a reference for testing trace detection systems. The carrier, which has the consistency of hand cream and can be dispensed from a tube or a syringe, is inert with respect to the contraband substances and d... | 03/19/2002 |
| 6352863 | Assay device An assay device and method are provided which allow the determination of the presence or absence of at least one analyte in a test sample, while providing specific identification of the test subject. The assay device includes a reaction medium having at l... | 03/05/2002 |
| 6284472 | Method for extending the range of an immunoassay Calibrating an immunoassay by generating two reaction rate measuring curves, from samples having higher and lower relative levels of antigen, extrapolating a combination of the curves to cover sample concentrations known to contain an excess of antigen re... | 09/04/2001 |
| 6274334 | Monoclonal antibody, cell line and immunoassay for ractopamine A hybridoma cell line has been produced for secreting a monoclonal antibody that binds ractopamine and is effective to detect ractopamine levels of about 1 ng/mL or lower. This monoclonal antibody may be used for the detection and quantitative determinati... | 08/14/2001 |
| 6228658 | Method of using a test strip for the immunochemical detection of substances A test strip for the immunochemical detection of substances after sampling from surfaces, with a conjugate zone (2) located between an eluent application zone (1) at one end of the test strip and a reaction zone (3) at the opposite end, the zones being in... | 05/08/2001 |
| 6224831 | Microassay device and methods The subject invention relates to a rapid, field-portable, modular, versatile and highly reliable assay device for substances, particularly drugs of abuse, which provides a positive signal in the presence of a specific substance for which the device has be... | 05/01/2001 |
| 6203757 | Fluid sample distriution system for test device Diagnostic products having multiple test strips within a unitary diagnostic test device, or test icon, are described herein. In the preferred embodiments of the diagnostic test device of this invention, a fluid sample distribution system is provided where... | 03/20/2001 |
| 6174688 | Multiassay method for determining the concentrations of antigens and interferants A method of determining the concentration of a sample antigen in the presence of an interferant by (1) running two immunoassays on the sample: one assay where the interferant influences the binding of both the sample antigen and a labeled antigen and a se... | 01/16/2001 |
| 6162647 | Method for removing interfering substances from a urine sample using a chemical oxidant Urine samples are made free of potentially interfering substances, such as alkaloids or pharmaceuticals, by contacting the urine sample with an amount of a chemical oxidizing agent, while retaining the physical indicia characteristic of urine to allow the... | 12/19/2000 |
| 6153147 | Beverage analysis sample The device includes a housing having a main body including an analysis chamber with at least one chemical reagent composition contained therein and a vessel portion for receiving and capturing a fluid specimen taken from a beverage. The device is structur... | 11/28/2000 |
| 6136801 | Therapeutic agent with quantitative consumption marker Quantitative compliance markers and associated methods for monitoring patient compliance with medication prescriptions associated with compliance markers have been found to eliminate the need for specific quantitative relationships for each new drug teste... | 10/24/2000 |
| 6133040 | Process and test kit for cocaine detection Test kit and method for discriminating cocaine and its salts from substances that falsely give a positive color reaction with Scott's thiocyanate reagent. As all Scott false positive substances have lower pKa values than cocaine, or in their basic from hi... | 10/17/2000 |
| 6124136 | Method of monitoring compliance with methadone treatment program A method of monitoring compliance of a patient that has been placed on a methadone maintenance program by determining plasma methadone concentration from urine methadone concentration. An unadulterated urine sample is obtained from the patient. The urine ... | 09/26/2000 |
| 6074608 | Closed container inspection and treatment apparatus An apparatus for injecting a controlled amount of gas into a sealed container to allow efficient analysis of the contents of the container. The apparatus includes an inlet opening that allows for a known gas to be placed within the container and a device ... | 06/13/2000 |
