Clinical Evaluation of the T-SPOT.TB Test for Patients with Indeterminate Results on the QuantiFERON TB-2G Test

Abstract

We think it may be necessary to introduce T-SPOT.TB test to increase the diagnostic rate of TB disease including latent tuberculosis infection because indeterminate results of QFT-2G test might be further decreased using T-SPOT.TB test. Although 14 patients showed indeterminate results on both tests, the lymphocytes of these patients may not possess functional cytokine production activity.