In wealthy countries like Australia, we should be using both tests to detect LTBI. If the tuberculin test (PPD 10units) is less than 15 mm induration, then a QuantiFERON –TB gold in tube is called for . This should considerably reduce the number of people treated unnecessarilyThe obvious question would be, why bother with the TST in the first place? Perhaps it is time for the NTAC to also review their position.
November 29, 2010
Head turning
The Australian Tuberculosis Review has never been particularly enamoured with IGRA and QuantiFERON however the following comment by Dr John Thompson indicates a sea change in opinion