The LIAISON QuantiFERON-TB Gold Plus assay is an in vitro diagnostic test for the detection of interferon-γ (IFN-γ) in human lithium heparin plasma by chemiluminescence immunoassay (CLIA) using the LIAISON XL Analyzer.
The QuantiFERON-TB Gold Plus Blood Collection Tubes, containing a peptide cocktail simulating ESAT-6 and CFP-10 proteins, are used in conjunction with the LIAISON QuantiFERON-TB Gold Plus assay to stimulate cells in heparinized whole blood. Detection of IFN-γ is used to identify in vitro responses to these peptide antigens that are associated with Mycobacterium tuberculosis infection.
The assay is a qualitative indirect test for M. tuberculosis infection (including disease). Although the assay detects IFN-γ quantitatively, the interpretation of the result for a single patient is strictly qualitative.
The LIAISON QuantiFERON-TB Gold Plus assay must be performed using only the LIAISON XS or LIAISON XL Analyzer.
Two products are required to operate the test:
Either:
Or:
Product availability may vary from country to country. Consult your regional QIAGEN sales representative for more details.
Instructions for use are available at the manufacturer's website.