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5059518 |
Stabilized lyophilized mammalian cells and method of making same
A method of lyophilizing mammalian cells to produce preserved human cells, hybridoma cell lines, tissue cells, and control cells for immunoassays and other hematological measurements. Prior to...
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5057278 |
Sterile loop calibration system
An endless path calibration system comprising a sensor cassette having a flow-through passage and at least one sensor to be calibrated, a chamber coupled to the sensor cassette to define an endless...
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5053341 |
Tissue simulating gel for medical research
A tissue simulating gel and a method for preparing the tissue simulating gel are disclosed. The tissue simulating gel is prepared by a process using water, gelatin, ethylene glycol, and a...
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5036014 |
Deuterated cannabinoids as standards for the analysis of tetrahydrocannabinol and its metabolites in biological fluids
New internal standards for use in gas chromatography/mass spectrometry test methods, comprising deuterated cannabinoids, have been developed for the analysis of tetrahydrocannabinol and its...
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5028542 |
Glucose measurement control reagent and method of making the same
The invention relates to a non-serum based control reagent for glucose determination. Rather than using modified serum, the control reagent contains water, glucose, and the viscosity agent...
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5024951 |
Method of calibrating a sheet type electrode
A method of measuring an ion-concentration characterized by a sample absorbed in an easily absorbing solution material and the absorbing material is brought into contact with a measuring portion to...
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5023186 |
Blood gas/electrolytes calibrator and methods of making and using the same
Aqueous solutions containing buffers and electrolytes are adjusted to levels required for calibration of both blood gas analyzers and ion selective electrolyte analyzers. A control material,...
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5023185 |
Method for determining resolution power or discrimination capacity of an NMR imaging apparatus
A phantom for diagnosis by nuclear magnetic resonance imaging comprises a container made of a synthetic resin and a hydrogel sealingly contained in the container. The container has at least one...
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5013666 |
Control for blood gas/calcium analysis instrumentation
A liquid control standard for the use in the quality assurance of blood analysis instrumentation systems is disclosed. The liquid control standard is able to act as a control standard for blood gas...
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5008202 |
Blood diluent for red blood cell analysis
Method for diluting blood, blood diluent, and antimicrobial agents and reagents, especially suitable for use in enumeration and sizing of blood cells. The antimicrobial agent in the blood diluent...
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5001054 |
Method for monitoring glucose
A method for monitoring the glucose level in a body fluid uses an apparatus which includes a conjugate of glucose oxidase and a fluorescent dye coated onto an optical fiber in contact with the body...
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4994375 |
Stable human serum based control and/or calibrant
A stable human serum based control for the assay of Total LD and CK and their isoenzymes. This control may be lyophilized and reconstituted and still provide the same enzyme activity prior to...
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4994393 |
Blood partitioning composition
A composition is provided for use, particularly in evacuated blood collection tubes, as a blood partitioning composition. The composition is useful in provididng cleaner serum or plasma samples for...
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4968629 |
Blood diluent for automatic and semi-automatic determination of white cells and method of utilizing same
A universal blood diluent for use in hematology analysis is the subject of this invention. The diluent consists of an aqueous solution of 0.4-1.5% by weight of either Na 2 SO 4 or NaNO 3 or a...
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4962038 |
Multi-purpose blood diluent and lysing agent for differential determination of lymphoid-myeloid population of leukocytes
An isotonic multipurpose blood diluent, and a method for use of this diluent with a weak lysing reagent system which is especially suitable for routine enumeration of traditional hemogram values,...
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4960708 |
Pressurized packaged reference liquid for blood gas analysis
A packaged single-phase reference liquid comprising a gas and liquid-impermeable sealed container and a reference liquid containing a highly diffusible gas.
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4959176 |
High resolution non corrosive amino acid analysis buffer solutions
Aqueous buffer solutions for use in an ion exchange amino acid analysis system compounded so that it is non-corrosive to the stainless steel components of such a system while achieving high...
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4940658 |
Assay for sulfhydryl amino acids and methods for detecting and distinguishing cobalamin and folic acid deficency
Method for determining levels of sulfhydryl amino acids, particularly total homocysteine levels in samples of body tissue from warm-blooded animals, methods of detecting cobalamin and folic acid...
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4925629 |
Diagnostic device
A diagnostic device (10) includes a plurality of standard solutions for being dispensed into a row of wells (20), the standard solutions contained within a predetermined number of standard tubes...
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4921807 |
Method and apparatus for maintaining urine specimens
A urine specimen is preserved from bacterial deterioration as to relative constituents by adding thymol. To the thymol-treated specimen, lithium-solution volume-marker is added, then is divided...
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4906581 |
Method of quality control for hollow fiber gas transfer cells
A method for non-destructive testing for approximation of oxygen transmission in hollow fiber blood oxygenators or the like is provided which method includes passing a first fluid at a...
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4886965 |
Method for calibrating variable wavelength liquid chromatography detectors
A method for determining the wavelength accuracy of a variable wavelength liquid chromatography detector in the low UV range comprising filling the cell of the detector with a test solution and...
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4883762 |
Stabilized isoenzyme control products
Isoenzyme control reagents and methods for making same stabilized by means of plexiform stabilizing means. The preferred plexiform stabilizing means is selected from the group consisting of...
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4879272 |
Method and composition for preventing the adsorption of a medicine
A method of preventing erythropoietin in an aqueous solution from being adsorbed on the inner surface of the wall of a container by incorporating in the aqueous solution one or more additives, and...
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4877741 |
Treatment of human plasma with brown recluse spider toxin to emulate a lupus anticoagulant
A new method for improving the accuracy of blood tests for the presence of lupus anticoagulants and for blood factor deficiencies is disclosed. Brown recluse spiders are collected, their venon...
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4872956 |
Methods of measuring ion-concentration and the like and a calibrating sheet as well as a calibrating method of measuring devices used therein
A method of measuring an ion-concentration and the like characterized by a sample absorbed in an easily absorbing solution material and the absorbing material is brought into contact with a...
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4867908 |
Method and materials for calibrating flow cytometers and other analysis instruments
A method for calibrating an instrument for using that instrument to obtain at least one light-related signal from particles under analysis comprises directing an incident beam of light at...
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4868126 |
Method of calibrating a fluorescent microscope using fluorescent calibration microbeads simulating stained cells
A method of calibrating a flow cytometer or fluorescent microscope is based on a set of highly uniform microbeads associated with a fluorescent dye in such a way that the microbeads have the same...
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4855931 |
Stochastic method for finding molecular conformations
This is a stochastic method for determining the likely conformations of a molecule by starting with an initial molecular structure along with given atomic coordinate positions and defined bonds...
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4847204 |
Calibrator composition and method of producing and using same for veterinary applications
Disclosed are a calibrator composition and method of producing and using the same in the analysis of blood of a particular species. From whole blood of the particular species, a solution is derived...
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4843013 |
Multiple control standard for blood analysis
This invention discloses a multiple control standard for the use in the quality assurance of blood analysis instrumentation systems. The liquid control standard is able to act as a control standard...
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4840911 |
Use of sulfoxides for testing ionization detector system
A method of simulating a positive response by volatile organophosphorus ers to an ionization detector system which comprises forwarding to the ionization detector system a gaseous stream comprising...
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4820627 |
Method of preparing particles suitable for tabletting into diagnostic reagents
A completely water-soluble, solid, labile biochemical-containing diagnostic reagent is prepared without the need of a lyophilization step, by spraying, preferably by a fluidized bed process, an...
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4816410 |
Control slide for immunoassay kit and method of making same
A control slide for use in an immunoassay having a section of a cell pellet retained on the slide in a stable and substantially permanent formation which can be stored at room temperature. Further,...
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4812412 |
Standard specimen and method of making and using same
This invention provides a standard specimen useful for the quantitative evaluation of performance of stains, staining solutions and staining processes used on biological specimens, and also for the...
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4806486 |
Calibration liquid for ion-specific electrodes, process for preparing them and their application
A calibration liquid, especially suitable for ion-selective electrodes, containing albumin. This solution is stable and prevents errors by junction potentials or unknown complexing with calcium.
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4806490 |
Procedure for the detection of allergen-containing house dust
The invention relates to a procedure to establish the presence of allergen-containing housedust, as results when or after housedust mites occur, in which samples of dust present in buildings are...
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4793987 |
Stabilized radiolabelled compounds
A stabilizer for radioactively labelled organic compounds has the general formula ##STR1## where R is C1 to C4 alkylene which may be OH substituted, m is 0 or 1 (i.e. R may be absent or present), X...
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4784960 |
Process for preparation of control for use in progesterone receptor
A process is disclosed for producing steroid hormone receptor samples to be utilized as controls during assays of various human tissue for steroid hormones, especially estrogen and progesterone....
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4780419 |
Method of inhibiting glycolysis in blood samples
There is described a method of inhibiting glycolysis in blood samples by adding an acid to the blood sample to adjust pH of the blood to a level between 5.0 and 7.0. Collected blood samples undergo...
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4774189 |
Fluorescent calibration microbeads simulating stained cells
A method of calibrating a flow cytometer or fluorescent microscope is based on a set of highly uniform microbeads associated with a fluorescent dye in such a way that the microbeads have the same...
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4727041 |
Method of diagnosing Alzheimer's disease
A method of diagnosing Alzheimer's disease by the determination of the levels of the hormones somatotropin (human growth hormone) and somatomedin-C (IGF-I) after the administration of the L-dopa...
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4715988 |
Standard for analysis
A block of polymeric material 12 comprises label layers 14 and interposed non-label layers 16, each label layer containing a different known concentration of a label material. The block can be...
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4711852 |
Control for blood gas analyzers and hemoglobin analysis
A blood gas-hemoglobin analysis control which simulates whole human blood characteristics comprising a buffered suspension medium containing erythrocytes which have been stabilized with an...
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4704352 |
L-ascorbate-2-phosphate salts in blood cell storage
A solution for blood cell storage having sugar-containing blood cell nutrients therein and additionally containing a magnesium or calcium L-ascorbate-2-phosphate salt is taught. The magnesium and...
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4704365 |
Composition and method for stabilization of dinucleotides
A reduced dinucleotide, preferably nicotinamide adenine dinucleotide (NADH), is stabilized in an aqueous base liquid containing propylene glycol, boric acid and a buffer capable of buffering within...
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4689308 |
Article for preparing a chemical sensor for use
The article includes a first vial (12) which is positioned within a second larger vial (32). The first vial (12) separately contains a first fluid, such as a first calibrating fluid, and the second...
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4689307 |
Fluorescence microscopy sample mounting method and structure
A method and structure for mounting fluorescent samples, e.g., fluorescent microbeads, are based on immobilizing the samples in a gel which preserves the spectral properties of the samples and...
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4687776 |
Drug stabilization
Certain derivatives of procaterol are believed to possess similar biological activity to the base compound, (i.e., as bronchodilators) but have greater stability and bioavailability.
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4683209 |
Viability test device
A viability test device wherein the viability of a test composition for the determination of an analyte of interest can be determined by simply wetting the device with ordinary water. The viability...
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