Health Canada Advisory Statement Recommendations
IGRAs are not currently recommended : z 1. For the diagnosis of active TB
z 2. For serial testing such as in health care workers or prison staff and inmates.
z 3. In children.
z 4. In an immunocompromised person, IGRA may be used in addition to the TST and if either is positive consider treatment for LTBI. However historical data suggests INH may not benefit HIV patients who are TST negative