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. 2012 May 7;7(5):e36551. doi: 10.1371/journal.pone.0036551

Figure 1. Flow of LTBI patient evaluation and testing at BCHD in the post-QFT-GIT period.

Figure 1

*Among 750 referrals, 690 had a TST by referring source, 23 had a QFT-GIT by the referring source, and 5 had both a QFT-GIT and TST performed by referral source); 32 individuals were referred as B-Waivers without prior LTBI testing based on abnormal CXR during immigration. Among 567 referrals that came to BCHD for evaluation, 525 were referred with a TST result and 19 for a positive QFT-GIT and 5 individuals had both a QFT-GIT and TST performed by referral source; 18 B-waiver referrals were evaluated without prior LTBI testing. Among these 567 referrals, 168 had only a TST (30%), 37 had only a QFT-GIT (67), and 362 (64%) had both a TST and a QFT-GIT test result. Of 399 QFT-GIT test results among referrals evaluated by BCHD, 375 had QFT-GIT testing at BCHD and 24 had QFT-GIT testing from referral source.