Abstract:
An improved device and system for facilitating polymerase chain reaction including a light source, detector, waveguide, and filters that occupy minimal space and facilitate detection of stationary samples, reduced sample read time, and simultaneous reading of multiple light wavelengths.
Abstract:
An improved tube (10) including a closure portion (12), a strap (18) integrally connected to the closure portion (12) and being configured for defining a living hinge, a body portion (20) having a longitudinal axis and an outer wall generally circumscribing the longitudinal ax is, and being integrally and hingedly connected with the closure portion (12) by way of the strap (18), the body portion (20) including a head portion (13) that has an opening (26) through which a sample is dispensed, and a sample portion (28) having a first outer wall dimension (OWD1) and including a closed distal end (30) and a wall structure (32) that includes an outer wall (34) and an inner wall structure (36) that defines a hollow cavity (38) within which the sample resides as a sample volume after is dispensed through the head portion (13), the sample portion (28) being generally elongated along the longitudinal axis and being configured for elastic deformation along a portion of its length, including in a direction that is generally transverse to the longitudinal axis so that at least a portion of the wall structure compressively and resiliently deforms and engages a wall defining an opening in a sample block of a polymerase chain reaction amplification device, and the first outer wail dimension (OWD1) of the sample portion (28) reduces to a smaller second outer wall dimension (OWD2).
Abstract:
The present invention provides a method and device for collecting treating and analysis of biological or chemical material by introducing a source material into a specimen container, transferring the source material to a processing device and thermally, chemically and/or mechanically treating the source material to alter at least one constitutive characteristic of the source material and to release or create a target material from the source material.
Abstract:
The present invention is directed toward a stable calibrator and/or control, kit and process for using in a glucose monitoring instrumentation. Principally, the instant invention teaches a glycolyzed red blood cell component which has been treated with a glycolysis stabilizing effective amount of at least one non- cross linking aldehyde compound which may be added to fresh plasma along with an amount of glucose to form a simulated whole blood glucose control product, effective for maintaining a particular and essentially stable glucose concentration over a period of time sufficient for accurate measurement and calibration of a glucose measuring instrument.
Abstract:
A suspension composition for a hematology analysis control particularly useful for preserving relevant detectable characteristics of blood cells for a prolong stability period. The suspension may include at least one polysaccharide, which may include or derive from chitosan and/or chitin, as a stabilizing agent.
Abstract:
A device and system for facilitating polymerase chain reaction analysis including a light source (46), photodiodes (44), multi- branched waveguides (32), and filters (40) that occupy minimal space and allow reduced sample read time and rapid reading of multiple light wavelengths.
Abstract:
A composition (and associated methods) including a plurality of treated red blood cells for simulating reticulocytes, and particularly an immature reticulocyte fraction, of whole blood when processed as a sample in an automated analyzer capable of detecting reticulocytes. A method for making the composition or other simulated reticuolcyte may include steps of contacting a suspension of a plurality of red blood cells each having a membrane in an initial state that surrounds an interior volume of a cell with an effective amount of a hypertonic permeabilizing solution including dimethyl sulfoxide and a hypotonic loading agent delivery solution including a loading agent, for a sufficient time to form a plurality of pores in the membrane, for permitting the loading agent to enter into the interior volume of the cells, and, after entry of a desired amount of the loading agent into the interior volume of the cell, for sealing the pores for substantially restoring the membrane to the initial state while substantially encapsulating the loading agent within the resulting cell, and preferably also retaining within the resulting cell a substantial amount of hemoglobin from the original starting red blood cell.
Abstract:
The present invention provides a method and device for treating and analyzing a biological specimen. The biological specimen is introduced into a processing device and treated thermally, mechanically, chemically or any combination thereof within the processing device to alter at least one constitutive characteristic of the biological specimen and to release or create one or more biological indicators from the biological specimen. The biological specimen is further contacted with a treated polymeric material so that at least a portion of the polymeric material binds to the one or more biological indicators.
Abstract:
The present invention provides a method and device for collecting treating and analysis of biological or chemical material by introducing a source material into a specimen container, transferring the source material to a processing device and thermally, chemically and/or mechanically treating the source material to alter at least one constitutive characteristic of the source material and to release or create a target material from the source material.
Abstract:
The present invention is directed toward a stable calibrator and/or control, kit and process for using in a glucose monitoring instrumentation. Principally, the instant invention teaches a glycolyzed red blood cell component which has been treated with a glycolysis stabilizing effective amount of at least one non-cross linking aldehyde compound which may be added to fresh plasma along with an amount of glucose to form a simulated whole blood glucose control product, effective for maintaining a particular and essentially stable glucose concentration over a period of time sufficient for accurate measurement and calibration of a glucose measuring instrument.