
TB testing with QFT-Plus
Comparison of QFT-Plus and TST for TB testing
QFT-Plus (1-3) | TST (2,4) | |||
---|---|---|---|---|
Single visit assay? | YES | Requires only one patient visit | NO | Requires two patient visits |
Sensitivity? | YES | >95% sensitivity – accurately identify TB-infected patients |
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 screening situations |
NO | High program costs due to second visits and false positives |
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Top 3 reasons to choose QFT-Plus
References:
- QuantiFERON-TB Gold Plus (QFT-Plus) ELISA Package Insert. Current QFT-Plus package inserts are available at www.QuantiFERON.com
- Diel, R., Loddenkemper, R., and Nienhaus, A. (2010) Chest 137, 952.
- Harada, N. et al. (2008) J. Infect. 56, 348.
- Tuberculin Purified Protein Derivative (Mantoux) TUBERSOL® Package insert. Sanofi Pasteur Limited. February 2013. R8-2013.
- Pai, M., Zwerling, A., and Menzies, D. (2008) Ann Intern Med 149, 177–184.
- Pareek, M. et al. (2013) Thorax 68, 230.
- Nienhaus A, et al. (2007) Arch. Occup. Environ. Health. 81, 295–300.
- Turner, J. et al. (1996) Immunology 87, 339.
- Brookes, R.H. et al. (2003) Eur. J. Immunol. 33, 3293.
- Stenger, S. et al. (1998) Science 282, 121.
*QuantiFERON-TB Gold Plus Blood Collection Tubes by QIAGEN and LIAISON Analyzer by DiaSorin.
Product claims may differ from country to country based on regulations and approvals. Contact your country representative for further details.
QFT-Plus is an in vitro diagnostic aid for detection of Mycobacterium tuberculosis infection. QFT-Plus is an indirect test for M. tuberculosis infection (including disease) and is intended for use in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations. QFT-Plus Package Inserts, available in multiple languages, as well as up-to-date licensing information and product-specific disclaimers can be found at www.QuantiFERON.com.