Figure 2. Quantitative results of QFT-GIT and QFT-Plus results in healthcare workers. Scatter plots show quantitative results for QFT-GIT versus QFT-Plus in healthcare workers. Discordances are shown in red (1 for TB1 and TB2, and 4 for TB2 only). The dashed reference lines at 0.35 IU/ml are the assay cutoffs.