For in vitro diagnostic use. The RIDASCREEN® Influenza B tests are enzyme immunoassay for the quantitative determination of IgA or IgG antibodies against type B influenza virus in human serum.
The tests should be used for confirmation purposes when there is a suspected case of infection with Influenza B or for clarifying the immune status.
After infection with influenza viruses, specific antibodies are formed against the pathogen as a result of the response from the immune system. By using immunological methods, it is possible to determine the antibodies in serum. Both the choice of the pathogen-specific antigen and the selected test method have a significant influence on the test result.
Purified antigens are coated to a microwell plate. Antibodies in the patient samples bind to the antigens and are determined during the second incubation step by using enzyme-labelled anti-human antibodies (the conjugate). The enzyme converts the colourless substrate (H2O2/TMB) to a blue end product. The enzyme reaction is stopped by adding sulphuric acid and the colour of the mixture switches from blue to yellow at the same time. The final measurement is carried out at 450 nm on a photometer using a reference wavelength ≥ 620 nm.
|Test format||Article no. K6411|
Influenza B IgA (96 determinations)
Article no. K6421
Influenza B IgG (96 determinations)
Microtiter plate with 96 wells (12 strips with 8 removable wells each)
|Incubation time||3 x 30 min at 37 °C|