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quantiferon positive :: Article Creator QIAGEN (QGEN) Publishes New Data On QuantiFERON TB Testing QIAGEN QGEN recently made progress in tuberculosis (TB) testing. The company announced that a new, systematic review of the clinical relevance of test values from the company's proprietary tuberculosis (TB) testing technology has been published. More specifically, the study showed that the company's proprietary QuantiFERON-TB Gold Plus test is unique in the market with two primary blood collection tubes — TB1 and TB2. This technology enables the detection of responsive CD4 T-cells in TB1 and, additionally, CD8 T-cell responses in TB2. A Few More Words on QuantiFERON QuantiFERON is an Interferon-gamma release assay (IGRA) blood test that is claimed to be a superior alternative to the tuberculin skin test. Universitas Padjadjaran, Indonesia conducted this meta-analysis on QuantiFERON testing and it was published in Clinical Chemistry and L...