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QuantiFERON-TB Gold In-Tube

Applications and Keys to Accurate Performance


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QuantiFERON-TB Gold In-Tube Applications, cont.

Slide 18

November 2009

This significant difference was not observed in patients WITHOUT a history of BCG vaccination, where the skin test and QuantiFERON In-Tube demonstrated pooled specificities of 97% and 99%, respectively.

These data suggest that the skin test and QuantiFERON appear to have similar sensitivity for the detection of patients with TB, but that the specificity of QuantiFERON is higher, especially in those individuals who have been vaccinated with BCG.

Applications, cont.


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