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Figure 1 | BMC Infectious Diseases

Figure 1

From: Diagnosis and follow-up of treatment of latent tuberculosis; the utility of the QuantiFERON-TB Gold In-tube assay in outpatients from a tuberculosis low-endemic country

Figure 1

Relationship between Tuberculin skin test and QuantiFERON-TB Gold responses. Corresponding tuberculin skin test (mm) and QuantiFERON-TB Gold (QFT-TB, UI/ml) responses at inclusion in patients with suspected tuberculous infection; positive QFT-TB test (n = 122) and negative QFT-TB test (n = 308). The cut-off for positive test is ≥ 0.35 IU/ml (solid line). Values > 10 IU/ml are treated as 10 IU/ml due to inaccurately of the ELISA assay above this level.

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