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The ViraSTAT® FITC-Labeled Anti-Influenza test panel is intended for the qualitative detection and confirmation of influenza A and B virus isolates from infected cell cultures through the use of the ViraSTAT® FITC-Labeled Anti-Influenza Pool and the identification and confirmation of influenza A and B by typing with separate ViraSTAT® FITC-Labeled Anti-Influenza type A or B, monoclonal antibodies, respectively. Performance characteristics have not been established for direct specimen staining.

The ViraSTAT® FITC-Labeled Anti-Influenza A and B monoclonal antibodies are fluorescently-labeled antibodies for use in culture confirmation of influenza A and B infections, respectively, in standard cell culture. The virus to be detected is grown in the appropriate cell culture system, fixed on a slide or coverslip and then the cell preparation is stained with the fluorescently-labeled monoclonal antibody. The stained sample is then viewed under a fluorescent microscope for a positive or negative identification. A positive sample is determined when cells displaying typical apple-green fluorescence are observed. Fluorescence may be present in the nucleus alone, in the nucleus and the cytoplasm, or in the cytoplasm alone. A negative sample is determined when slide wells or coverslips show no specific apple-green fluorescence in the cells and have at least 50 intact red counterstaining cells per well or 50% of the monolayer remaining on the coverslips or slides that are counterstained red.

The ZstatFlu® Test for Influenza Type A and B Viruses is an endogenous viral-encoded enzyme assay (EVEA) and is intended for use in the qualitative determination of influenza types A and B from throat swab specimens. The ZstatFlu® Test for Influenza Type A and B Viruses is not intended for the detection of influenza C. This test is indicated for the direct testing of patients presenting with influenza-like illnesses.

The Improved ZstatFlu® Test for Influenza Types A and B Virus is an endogenous viralencoded enzyme assay (EVEA) and is intended for use in the qualitative determination of influenza types A and B from throat swab specimens. The Improved ZstatFlu® Test for Influenza Types A and B Virus is not intended for the detection of influenza C. Influenza types A and B virus possess surface glycoproteins with neuraminidase activity, that hydrolyze substrates which contain alpha-ketosidically linked N-acetyIneuraminic acid (Neu5Ac). A modified Neu5Ac molecule has been synthesized and coupled to a chromogen to produce the neuraminidase substrate. In the presence of influenza types A and B virus the chromogenic substrate is then cleaved by the action of viral neuraminidase, releasing a free chromogen. This free chromogen precipitates to produce a blue color. The blue precipitate is then concentrated and collected from the reaction mixture onto a filter device.

The ViraZyme® Influenza ID test is a direct specimen test indicated for use in the qualitative detection of both influenza types A and B virus from throat swab specimens. The ViraZyme® Influenza ID test may be used when a patient is suspected of having symptoms of an influenza-like illness. These symptoms can include, but are not limited to the following: fever of 38.5℃, sore throat, headache, myalgia, rhinitis, vomiting, chills, malaise, and cough. A positive ViraZyme® result would indicate the presence of influenza type A or B virus. A negative result is considered presumptive and should be confirmed by culture. The ViraZyme® Influenza ID test does not detect influenza C, and is indicated for in Vitro Diagnostic Use only.

The ViraZyme® Influenza ID Test for Influenza Types A and B Viruses is an endogenous viralencoded enzyme assay (EVEA) and is intended for use in the qualitative determination of influenza types A and B from throat swab specimens. The ViraZyme® Influenza ID Test is not intended for the detection of influenza C. Influenza types A and B virus possess surface glycoproteins with neuraminidase activity, that hydrolyze substrates which contain alpha-ketosidically linked N-acetylneuraminic acid (Neu5Ac). A modified Neu5Ac molecule has been synthesized and coupled to a chromogen to produce the neuraminidase substrate. In the presence of influenza types A and B virus the chromogenic substrate is then cleaved by the action of viral neuraminidase, releasing a free chromogen. This free chromogen precipitates to produce a blue color. The blue precipitate is then concentrated and collected from the reaction mixture onto a filter device.

The ViraZyme® Culture Confirmation Screen for Influenza and Parainfluenza is intended for use as a screening test for respiratory viral cultures infected with influenza type A and B and parainfluenza types 1, 2, 3, and 4. This test will screen culture fluids for the presence of these viruses, but it is not indented for the definitive typing of these viruses.

Influenza and parainfluenza viruses posses surface glycoproteins with neuraminidase activity, that hydrolyze substrates which contain alphaketosidically linked N-acetylneuraminic acid (Neu5Ac). A modified Neu5Ac molecule has been synthesized and coupled to a chromogen to produce the neuraminidase substrate. In the presence of influenza and parainfluenza the chromogenic substrate is then cleaved by the action of viral neuraminidase, releasing a free chromogen. This free chromogen is then precipitated by combining with a diazonium salt to produce a red color. The red precipitate is then concentrated and collected from the solution onto a filter device.