RA, PsA, AS and Pso patients with a positive TST (≥5 mm in BCGunvaccinated)
or IGRA (QFT-GIT ≥ 0.35 UI/ml; T-SPOTB when at least
one of the antigens has ≥6 spots) should have a chest radiograph and,
if suggestive of active TB, a subsequent sputumexamination to evaluate
the presence of Mycobacterium tuberculosis.
Patients with RA, PsA, AS and Pso with a negative screening TST
or IGRA may not need further evaluation in the absence of risk
factors and/or absence of clinical suspicion for TB in low TB risk
countries
RA, PsA, AS and Pso patients with a positive TST (≥5 mm in BCGunvaccinated)or IGRA (QFT-GIT ≥ 0.35 UI/ml; T-SPOTB when at leastone of the antigens has ≥6 spots) should have a chest radiograph and,if suggestive of active TB, a subsequent sputumexamination to evaluatethe presence of Mycobacterium tuberculosis.Patients with RA, PsA, AS and Pso with a negative screening TSTor IGRA may not need further evaluation in the absence of riskfactors and/or absence of clinical suspicion for TB in low TB riskcountries
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