TB testing with QFT-Plus
|QFT-Plus (1-3)||TST (2,4)|
|Single visit assay?||YES||Requires only one patient visit||NO||Requires two patient visits|
|Sensitivity?||YES||>94% sensitivity – accurately identify
|NO||70% sensitivity – more missed diagnoses|
|Specificity? (5)||YES||>97% specificity – less unnecessary
follow-up and treatment
|NO||Variable; 59% in BCG-vaccinated populations -
false positives result in costly follow-up
|Objective results?||YES||Objective and controlled laboratory assay||NO||Subjective measurement of skin induration|
|Affected by BCG vaccination?||YES||Unaffected by BCG vaccination||NO||Results affected by BCG vaccination|
|Most cost effective? (6,7)||YES||More cost effective than TST in multiple
|NO||High program costs due to second visits and
Improve your TB testing
Switch from the tuberculin skin test to QFT-Plus for accurate and convenient TB detection.
Detect TB infection with confidence
Top 3 reasons to choose QFT-Plus
Four tubes, one clear resultQFT-Plus requires just 4 ml of whole blood - either 1 ml in each of the 4 QFT-Plus tubes or into a standard heparin tube. Test results are calculated using a lab-based ELISA assay.
Innovative CD8 T cell technologyCD8 T cells have been shown to play an important role in MTB immunity (8–10). QFT-Plus measures the cell-mediated immune response to MTB infection from both CD4 and CD8 T cells.
Automated testing solutionThe LIAISON® QuantiFERON-TB Gold Plus* solution allows laboratories to easily benefit from an automated and efficient workflow for less hands-on time & improved time to results.