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Table 6 Concordance between QFT-3G and TSPOT

From: Poor concordance between interferon-γ release assays and tuberculin skin tests in diagnosis of latent tuberculosis infection among HIV-infected individuals

 

TSPOT positive

(n = 14)

TSPOT negative

TSPOT invalid

QFT-3G positive

(n = 9)

1

6

2

QFT-3G negative

13

264

44

QFT-3G indeterminate

0

4

1

  1. κ = 0.06, 95% CI (-0.1, 0.2).
  2. TST = Tuberculin Skin Test
  3. QFT-3G = QuantiFERON-TB Gold in Tube
  4. TSPOT = T-SPOT.TB