摘要:
The present invention provides a cellular whole-blood D-dimer composition for use with diagnostic test procedures for D-dimer, and a method of its preparation. The composition comprises human erythrocytes and processed plasma to which D-dimer, and stabilizers, and optionally antimicrobial agents, are added and can be used as a standard and control for D-dimer testing.
摘要:
The present invention provides a cellular whole-blood D-dimer composition for use with diagnostic test procedures for D-dimer, and a method of its preparation. The composition comprises human erythrocytes and processed plasma to which D-dimer, and stabilizers, and optionally antimicrobial agents, are added and can be used as a standard and control for D-dimer testing.
摘要:
A whole-blood-based substitute composition that is useful in coagulation assays as a standard, reference, control, calibrator, linearity verifier, or training material is prepared by combining a red blood cell lysate that is free of plasma, leukocytes, and platelets with a platelet-free plasma of human origin and an antimicrobial agent.
摘要:
Stabilized compositions of natriuretic peptides comprise the peptide and an effective stabilizing amount of (i) an alkyl or aryl sulfonyl fluoride protease inhibitor, or (ii) benzamidine:
摘要:
A whole-blood-based substitute composition that is useful in coagulation assays as a standard, reference, control, calibrator, linearity verifier, or training material is prepared by combining a red blood cell lysate that is free of plasma, leukocytes, and platelets with a platelet-free plasma of human origin and an antimicrobial agent.
摘要:
Solid beads each containing a selected quantity of analyte are combined and a liquid base matrix that contains attributes of a biological fluid that is to be assayed, together constitute a kit from which a laboratory technician can, at the point of use, prepare a liquid control for a particular analyte, and preferably a series of such controls at different levels of the same analyte customized for a particular assay.
摘要:
Low-concentration reference controls for C-reactive protein assays are prepared from higher-level starting materials by simple filtration using silica-type filter media formerly used for removing lipids. This process avoids the need for antibodies to capture the protein and resuspend it. Surprisingly, the removal of CRP by the silica-type filter media is selective toward CRP, having little or negligible effect on other proteins in the starting matrix, and accordingly little or negligible change in the total protein content.
摘要:
A stable reticulocyte reference control which may be used with both manual and flow cytometric reticulocyte counting devices is provided. The reference control contains erythrocytes loaded with nucleic acids or polyanions capable of binding with a cationic dye. The loaded erythrocytes are suspended in an aqueous preserving medium. Methods of making and using the reticulocyte reference control are also provided.
摘要:
Solid beads each containing a selected quantity of analyte are combined and a liquid base matrix that contains attributes of a biological fluid that is to be assayed, together constitute a kit from which a laboratory technician can, at the point of use, prepare a liquid control for a particular analyte, and preferably a series of such controls at different levels of the same analyte customized for a particular assay.
摘要:
References, i.e., solutions of known concentration for use as controls, calibrators, or standards, for assays of carbohydrate-deficient transferring in bodily fluids are obtained from units of bodily fluids from normal healthy individuals by digesting the transferring in these units with exogenous neuraminidase to achieve concentrated CDT solutions, which are then added in preselected proportions to a base matrix to achieve target concentrations.